Twenty Trees

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Half Third-Cousin

1152 Marriage of Henry II and Eleanor of Aquitaine

1396 Marriage of Richard II and Isabella of Valois

1470 Marriage of Edward of Westminster to Anne Neville

1525 Knighting of Henry Fitzroy

Marriage of Henry II and Eleanor of Aquitaine

On 18 May 1152 Whit Sunday Henry "Curtmantle" II King England 1133-1189 (19) and Eleanor of Aquitaine Queen Consort Franks and England 1122-1204 (30) were married (he was her half third-cousin) at Poitiers Cathedral. They were more closely related than Eleanor and her previous husband Louis VII King Franks 1120-1180 (32). The marriage would bring the Kingdom of England, and the Duchies of Normandy and Aquitaine under the control of Henry "Curtmantle" II King England 1133-1189 (19).

On 18 May 1152 Whit Sunday Henry "Curtmantle" II King England 1133-1189 (19) and Eleanor of Aquitaine Queen Consort Franks and England 1122-1204 (30) were married (he was her half third-cousin) at Poitiers Cathedral. They were more closely related than Eleanor and her previous husband Louis VII King Franks 1120-1180 (32). The marriage would bring the Kingdom of England, and the Duchies of Normandy and Aquitaine under the control of Henry "Curtmantle" II King England 1133-1189 (19).

On 28 Apr 1180 Philip Augustus II King France 1165-1223 (14) and Isabelle Flanders Queen Consort France 1170-1190 (10) were married (he was her half third-cousin). Isabelle Flanders Queen Consort France 1170-1190 (10) by marriage Queen Consort France.

On 28 Apr 1180 Philip Augustus II King France 1165-1223 (14) and Isabelle Flanders Queen Consort France 1170-1190 (10) were married (he was her half third-cousin). Isabelle Flanders Queen Consort France 1170-1190 (10) by marriage Queen Consort France.

In 1188 Ranulf de Blondeville Gernon 6th Earl Chester, 1st Earl Lincoln 1170-1232 (18) and Constance Penthièvre Duchess Brittany 1161-1201 (27) were married (he was her half third-cousin). Constance Penthièvre Duchess Brittany 1161-1201 (27) by marriage Countess Chester (2C 1071).

In 1188 Ranulf de Blondeville Gernon 6th Earl Chester, 1st Earl Lincoln 1170-1232 (18) and Constance Penthièvre Duchess Brittany 1161-1201 (27) were married (he was her half third-cousin). Constance Penthièvre Duchess Brittany 1161-1201 (27) by marriage Countess Chester (2C 1071).

In 1220 William Gerulfing I Count Holland 1167-1222 (53) and Marie Reginar Count Holland 1190-1260 (30) were married (he was her half third-cousin). Marie Reginar Count Holland 1190-1260 (30) by marriage Countess Holland.

In 1220 William Gerulfing I Count Holland 1167-1222 (53) and Marie Reginar Count Holland 1190-1260 (30) were married (he was her half third-cousin). Marie Reginar Count Holland 1190-1260 (30) by marriage Countess Holland.

On 21 Jun 1221 Alexander II King Scotland 1198-1249 (22) and Joan Plantagenet 1210-1238 (10) were married (he was her half third-cousin). Joan Plantagenet 1210-1238 (10) by marriage as Queen Consort Scotland.

On 21 Jun 1221 Alexander II King Scotland 1198-1249 (22) and Joan Plantagenet 1210-1238 (10) were married (he was her half third-cousin). Joan Plantagenet 1210-1238 (10) by marriage as Queen Consort Scotland.

On 27 May 1234 Louis IX King France 1214-1270 (20) and Margaret Provence Queen Consort France 1221-1295 (13) were married (he was her half third-cousin). Margaret Provence Queen Consort France 1221-1295 (13) by marriage Queen Consort France.

On 27 May 1234 Louis IX King France 1214-1270 (20) and Margaret Provence Queen Consort France 1221-1295 (13) were married (he was her half third-cousin). Margaret Provence Queen Consort France 1221-1295 (13) by marriage Queen Consort France.

In 1238 Simon Montfort 6th Earl of Leicester 1208-1265 (30) and Eleanor Plantagenet Countess Pembroke, Countess Leicester 1215-1275 (23) were married (he was her half third-cousin) at Westminster Palace. Eleanor Plantagenet Countess Pembroke, Countess Leicester 1215-1275 (23) by marriage Countess of Leicester (1C 1107).

In 1238 Simon Montfort 6th Earl of Leicester 1208-1265 (30) and Eleanor Plantagenet Countess Pembroke, Countess Leicester 1215-1275 (23) were married (he was her half third-cousin) at Westminster Palace. Eleanor Plantagenet Countess Pembroke, Countess Leicester 1215-1275 (23) by marriage Countess of Leicester (1C 1107).

In 1249 Alfonso X King Castile, X King Leon 1221-1284 (27) and Violante Barcelona Queen Consort Castile, Queen Consort Leon were married (he was her half third-cousin).

In 1249 Alfonso X King Castile, X King Leon 1221-1284 (27) and Violante Barcelona Queen Consort Castile, Queen Consort Leon were married (he was her half third-cousin).

In 1269 Henry I King Navarre 1244-1274 (25) and Blanche Capet Queen Navarre 1248-1302 (21) were married (he was her half third-cousin).

In 1269 Henry I King Navarre 1244-1274 (25) and Blanche Capet Queen Navarre 1248-1302 (21) were married (he was her half third-cousin).

On 26 Feb 1324 William Jülich V Duke Jülich 1299-1361 (25) and Joanna Hainault Duchess Guelders 1315-1374 (9) were married (he was her half third-cousin). Joanna Hainault Duchess Guelders 1315-1374 (9) by marriage Duchess Guelders.

On 26 Feb 1324 William Jülich V Duke Jülich 1299-1361 (25) and Joanna Hainault Duchess Guelders 1315-1374 (9) were married (he was her half third-cousin). Joanna Hainault Duchess Guelders 1315-1374 (9) by marriage Duchess Guelders.

In 1325 John Bohun 5th Earl Hereford, 4th Earl Essex 1307-1336 (18) and Alice Fitzalan Countess Essex, Countess Hereford -1326 were married (he was her half third-cousin). Alice Fitzalan Countess Essex, Countess Hereford -1326 by marriage Countess Essex (3C 1239), Earl Hereford (6C 1199).

In 1325 John Bohun 5th Earl Hereford, 4th Earl Essex 1307-1336 (18) and Alice Fitzalan Countess Essex, Countess Hereford -1326 were married (he was her half third-cousin). Alice Fitzalan Countess Essex, Countess Hereford -1326 by marriage Countess Essex (3C 1239), Earl Hereford (6C 1199).

On 05 Feb 1344 Richard Fitzalan 10th Earl Arundel, 8th Earl Surrey 1306-1376 (38) and Eleanor Plantagenet Countess Arundel, Countess Surrey 1318-1372 (25) were married (he was her half third-cousin) at Ditton Church, Stoke Poges. Eleanor Plantagenet Countess Arundel, Countess Surrey 1318-1372 (25) by marriage Countess Arundel (Sussex).

On 05 Feb 1344 Richard Fitzalan 10th Earl Arundel, 8th Earl Surrey 1306-1376 (38) and Eleanor Plantagenet Countess Arundel, Countess Surrey 1318-1372 (25) were married (he was her half third-cousin) at Ditton Church, Stoke Poges. Eleanor Plantagenet Countess Arundel, Countess Surrey 1318-1372 (25) by marriage Countess Arundel (Sussex).

Before 1352 Thomas Brewes 1301-1361 and Beatrice Mortimer 1322-1383 were married (he was her half third-cousin).

Before 1352 Thomas Brewes 1301-1361 and Beatrice Mortimer 1322-1383 were married (he was her half third-cousin).

On 28 Oct 1371 Robert Ufford and Eleanor Fitzalan 1365-1375 (6) were married (he was her half third-cousin).

On 28 Oct 1371 Robert Ufford and Eleanor Fitzalan 1365-1375 (6) were married (he was her half third-cousin).

On 24 Jun 1380 John Hastings 3rd Earl Pembroke 1372-1389 (7) and Elizabeth Lancaster Duchess Exeter 1363-1426 (17) were married (he was her half third-cousin) at Kenilworth Castle. Elizabeth Lancaster Duchess Exeter 1363-1426 (17) by marriage Countess Pembroke (4C 1339).

On 24 Jun 1380 John Hastings 3rd Earl Pembroke 1372-1389 (7) and Elizabeth Lancaster Duchess Exeter 1363-1426 (17) were married (he was her half third-cousin) at Kenilworth Castle. Elizabeth Lancaster Duchess Exeter 1363-1426 (17) by marriage Countess Pembroke (4C 1339).

Before 01 Aug 1385 John Fitzalan 2nd Baron Maltravers, 2nd Baron Arundel 1364-1390 and Elizabeth Despencer Baroness Zouche Harringworth, Baroness Maltravers, Baroness Arundel -1408 were married (he was her half third-cousin). Elizabeth Despencer Baroness Zouche Harringworth, Baroness Maltravers, Baroness Arundel -1408 by marriage Baroness Maltravers (1C 1330), Baron Arundel (1C 1377).

Before 01 Aug 1385 John Fitzalan 2nd Baron Maltravers, 2nd Baron Arundel 1364-1390 and Elizabeth Despencer Baroness Zouche Harringworth, Baroness Maltravers, Baroness Arundel -1408 were married (he was her half third-cousin). Elizabeth Despencer Baroness Zouche Harringworth, Baroness Maltravers, Baroness Arundel -1408 by marriage Baroness Maltravers (1C 1330), Baron Arundel (1C 1377).

In 1387 William "Nithsdale" Douglas 1364-1392 (23) and Princess Egidia Stewart 1368-1388 (19) were married (he was her half third-cousin).

In 1387 William "Nithsdale" Douglas 1364-1392 (23) and Princess Egidia Stewart 1368-1388 (19) were married (he was her half third-cousin).

Marriage of Richard II and Isabella of Valois

On 31 Oct 1396 Richard II King England 1367-1400 (29) and Isabella Valois Queen Consort England 1389-1409 (6) were married (he was her half third-cousin). The marriage being one of the terms of a twenty-eight year peace treaty with France. He twenty-nine, she six. The marriage sowed the seeds subsequent rebellion since there was no prospect of an heir to secure the Crown.

On 31 Oct 1396 Richard II King England 1367-1400 (29) and Isabella Valois Queen Consort England 1389-1409 (6) were married (he was her half third-cousin). The marriage being one of the terms of a twenty-eight year peace treaty with France. He twenty-nine, she six. The marriage sowed the seeds subsequent rebellion since there was no prospect of an heir to secure the Crown.

On 27 Nov 1397 John Beaufort 1st Marquess Somerset, Dorset 1373-1410 (24) and Margaret Holland Duchess Clarence 1385-1439 (12) were married (he was her half third-cousin). Margaret Holland Duchess Clarence 1385-1439 (12) by marriage Countess Somerset (2C 1397).

On 27 Nov 1397 John Beaufort 1st Marquess Somerset, Dorset 1373-1410 (24) and Margaret Holland Duchess Clarence 1385-1439 (12) were married (he was her half third-cousin). Margaret Holland Duchess Clarence 1385-1439 (12) by marriage Countess Somerset (2C 1397).

In 1428 John Stanley 1423-1474 (5) and Cecilia Arderne 1423- were married (he was her half third-cousin).

In 1428 John Stanley 1423-1474 (5) and Cecilia Arderne 1423- were married (he was her half third-cousin).

Around 07 Feb 1444 John Pole 2nd Duke Suffolk 1442-1492 (1) and Margaret Beaufort Countess Richmond 1443-1509 were married (he was her half third-cousin). The date somewhat suspect; possibly Jan 1450. Papal dispensation was granted on 18 August 1450 which supports the later date. Margaret never recognised this marriage, and considered her next husband her first;as confirmed by her 1472 will.

Around 1510 Meynnart Wewyck Painter 1499-1525 (10). Portrait of Margaret Beaufort Countess Richmond 1443-1509 in the Masters Lodge, St John's College. Commissioned by John Fisher Bishop of Rochester 1469-1535 (40). Note the Beaufort Arms on the wall beneath which is the Beafort Portcullis. Repeated in the window. She is wearing widow's clothes, or possibly that of a convent; Gabled Headress with Lappets. On 29 Mar 2019, St John's College, Cambridge, which she founded, announced the portrait was original work by Wewyck.

Around 07 Feb 1444 John Pole 2nd Duke Suffolk 1442-1492 (1) and Margaret Beaufort Countess Richmond 1443-1509 were married (he was her half third-cousin). The date somewhat suspect; possibly Jan 1450. Papal dispensation was granted on 18 August 1450 which supports the later date. Margaret never recognised this marriage, and considered her next husband her first;as confirmed by her 1472 will.

Around 1510 Meynnart Wewyck Painter 1499-1525 (10). Portrait of Margaret Beaufort Countess Richmond 1443-1509 in the Masters Lodge, St John's College. Commissioned by John Fisher Bishop of Rochester 1469-1535 (40). Note the Beaufort Arms on the wall beneath which is the Beafort Portcullis. Repeated in the window. She is wearing widow's clothes, or possibly that of a convent; Gabled Headress with Lappets. On 29 Mar 2019, St John's College, Cambridge, which she founded, announced the portrait was original work by Wewyck.

Before Feb 1458 John Pole 2nd Duke Suffolk 1442-1492 and Elizabeth York Duchess Suffolk 1444-1503 were married (he was her half third-cousin). Elizabeth York Duchess Suffolk 1444-1503 by marriage Marchioness Suffolk (1C).

Before Feb 1458 John Pole 2nd Duke Suffolk 1442-1492 and Elizabeth York Duchess Suffolk 1444-1503 were married (he was her half third-cousin). Elizabeth York Duchess Suffolk 1444-1503 by marriage Marchioness Suffolk (1C).

Marriage of Edward of Westminster to Anne Neville

On 13 Dec 1470 Edward of Westinster Prince Wales 1453-1471 (17) and Anne Neville Queen Consort England 1456-1485 (14) were married (he was her half third-cousin) at Angers Cathedral, Angers. Anne Neville Queen Consort England 1456-1485 (14) was appointed Princess Wales. .

On 13 Dec 1470 Edward of Westinster Prince Wales 1453-1471 (17) and Anne Neville Queen Consort England 1456-1485 (14) were married (he was her half third-cousin) at Angers Cathedral, Angers. Anne Neville Queen Consort England 1456-1485 (14) was appointed Princess Wales. .

After 1483 Thomas Grey 2nd Marquess Dorset 1477-1530 and Eleanor St John Marchioness Dorset were married (he was her half third-cousin).

After 1483 Thomas Grey 2nd Marquess Dorset 1477-1530 and Eleanor St John Marchioness Dorset were married (he was her half third-cousin).

Before 1492 George Manners 11th Baron Ros Helmsley 1470-1513 and Anne St Leger Baroness Ros Helmsley 1476-1526 were married (he was her half third-cousin).

Before 1492 George Manners 11th Baron Ros Helmsley 1470-1513 and Anne St Leger Baroness Ros Helmsley 1476-1526 were married (he was her half third-cousin).

After 1494 Humphrey Vernon 1476-1542 and Alice Ludlow 1482-1531 were married (he was her half third-cousin).

After 1494 Humphrey Vernon 1476-1542 and Alice Ludlow 1482-1531 were married (he was her half third-cousin).

Around 1511 John Vere 14th Earl Oxford 1499-1526 (11) and Anne Howard Countess Oxford were married (he was her half third-cousin). Anne Howard Countess Oxford by marriage Countess Oxford (2C 1141).

Around 1511 John Vere 14th Earl Oxford 1499-1526 (11) and Anne Howard Countess Oxford were married (he was her half third-cousin). Anne Howard Countess Oxford by marriage Countess Oxford (2C 1141).

On 30 Nov 1523 Francis Talbot 5th Earl Shrewsbury, 5th Earl Waterford 1500-1560 (23) and Mary Dacre 1502-1538 (21) were married (he was her half third-cousin).

On 30 Nov 1523 Francis Talbot 5th Earl Shrewsbury, 5th Earl Waterford 1500-1560 (23) and Mary Dacre 1502-1538 (21) were married (he was her half third-cousin).

Knighting of Henry Fitzroy

On 18 Jun 1525 Henry Fitzroy (6) was created 1st Duke of Richmond and Somerset, 1st Earl Lincoln (7C 1525) at Bridewell Palace by his father Henry VIII (33).
Henry Clifford 1st Earl Cumberland 1493-1542 (32) was created 1st Earl Cumberland, Warden of the West Marches and Governor of Carlisle Castle.
Henry Courtenay 1st Marquess Exeter 1496-1538 was created 1st Marquess Exeter (1C 1525).
Thomas Manners 1st Earl Rutland 1492-1543 (33) was created 1st Earl Rutland (3C 1525).
Henry Percy 5th Earl of Northumberland 1478-1527 (47) carried the Sword of State. Thomas More Chancellor Speaker 1478-1535 (47) read the patents of nobility. Charles Brandon 1st Duke Suffolk 1484-1545 (41), Thomas Grey 2nd Marquess Dorset 1477-1530 (47),
Thomas Howard 3rd Duke Norfolk 1473-1554 (52), William Fitzalan 18th Earl Arundel 1476-1544 (49) and John Vere 14th Earl Oxford 1499-1526 (25) attended.
Around 18 Jun 1525 Henry Clifford 2nd Earl Cumberland 1517-1570 (8) and Eleanor Brandon Countess Cumberland 1519-1547 (6) were married (he was her half third-cousin) at Bridewell Palace. .

On 18 Jun 1525 Henry Fitzroy (6) was created 1st Duke of Richmond and Somerset, 1st Earl Lincoln (7C 1525) at Bridewell Palace by his father Henry VIII (33).
Henry Clifford 1st Earl Cumberland 1493-1542 (32) was created 1st Earl Cumberland, Warden of the West Marches and Governor of Carlisle Castle.
Henry Courtenay 1st Marquess Exeter 1496-1538 was created 1st Marquess Exeter (1C 1525).
Thomas Manners 1st Earl Rutland 1492-1543 (33) was created 1st Earl Rutland (3C 1525).
Henry Percy 5th Earl of Northumberland 1478-1527 (47) carried the Sword of State. Thomas More Chancellor Speaker 1478-1535 (47) read the patents of nobility. Charles Brandon 1st Duke Suffolk 1484-1545 (41), Thomas Grey 2nd Marquess Dorset 1477-1530 (47),
Thomas Howard 3rd Duke Norfolk 1473-1554 (52), William Fitzalan 18th Earl Arundel 1476-1544 (49) and John Vere 14th Earl Oxford 1499-1526 (25) attended.
Around 18 Jun 1525 Henry Clifford 2nd Earl Cumberland 1517-1570 (8) and Eleanor Brandon Countess Cumberland 1519-1547 (6) were married (he was her half third-cousin) at Bridewell Palace. .

Before 1535 Richard Grosvenor 1480-1543 and Catherine Cotton 1490-1535 were married (he was her half third-cousin).

Before 1535 Richard Grosvenor 1480-1543 and Catherine Cotton 1490-1535 were married (he was her half third-cousin).

Before Jun 1537 Henry Clifford 2nd Earl Cumberland 1517-1570 and Eleanor Brandon Countess Cumberland 1519-1547 were married (he was her half third-cousin).

Before Jun 1537 Henry Clifford 2nd Earl Cumberland 1517-1570 and Eleanor Brandon Countess Cumberland 1519-1547 were married (he was her half third-cousin).

In 1557 John Arundell 1530-1590 (27) and Anne Stanley Baroness Stourton were married (he was her half third-cousin).

In 1557 John Arundell 1530-1590 (27) and Anne Stanley Baroness Stourton were married (he was her half third-cousin).

On Feb 1566 James "Lord Bothwell" Hepburn 1st Duke Orkney 1534-1578 (32) and Jean Gordon Countess Bothwell, Countess Sutherland 1546-1629 (20) were married (he was her half third-cousin). Jean Gordon Countess Bothwell, Countess Sutherland 1546-1629 (20) by marriage Countess Bothwell.

On Feb 1566 James "Lord Bothwell" Hepburn 1st Duke Orkney 1534-1578 (32) and Jean Gordon Countess Bothwell, Countess Sutherland 1546-1629 (20) were married (he was her half third-cousin). Jean Gordon Countess Bothwell, Countess Sutherland 1546-1629 (20) by marriage Countess Bothwell.

In 1567 Edward Hastings 1541-1603 (26) and Barbara Devereux were married (he was her half third-cousin).

In 1567 Edward Hastings 1541-1603 (26) and Barbara Devereux were married (he was her half third-cousin).

On 13 Dec 1573 Alexander Gordon 12th Earl Sutherland 1552-1594 (21) and Jean Gordon Countess Bothwell, Countess Sutherland 1546-1629 (27) were married (he was her half third-cousin) at Huntly Castle, Huntly.

On 13 Dec 1573 Alexander Gordon 12th Earl Sutherland 1552-1594 (21) and Jean Gordon Countess Bothwell, Countess Sutherland 1546-1629 (27) were married (he was her half third-cousin) at Huntly Castle, Huntly.

On 27 May 1601 Edward Seymour 1st Earl Hertford 1539-1621 (62) and Frances Howard Duchess Lennox, Duchess Richmond 1578-1639 (22) were married (he was her half third-cousin). Frances Howard Duchess Lennox, Duchess Richmond 1578-1639 (22) by marriage Countess Hertford (3C 1559).

On 27 May 1601 Edward Seymour 1st Earl Hertford 1539-1621 (62) and Frances Howard Duchess Lennox, Duchess Richmond 1578-1639 (22) were married (he was her half third-cousin). Frances Howard Duchess Lennox, Duchess Richmond 1578-1639 (22) by marriage Countess Hertford (3C 1559).

After 05 Mar 1607 Robert Brudenell 2nd Earl Cardigan 1607-1703 and Mary Constable Countess Cardigan were married (he was her half third-cousin).

After 05 Mar 1607 Robert Brudenell 2nd Earl Cardigan 1607-1703 and Mary Constable Countess Cardigan were married (he was her half third-cousin).

Before Jan 1637 John Constable 2nd Viscount Dunbar 1615-1688 and Mary Brudenell Viscountess Dunbar were married (he was her half third-cousin).

Before Jan 1637 John Constable 2nd Viscount Dunbar 1615-1688 and Mary Brudenell Viscountess Dunbar were married (he was her half third-cousin).

On 25 Jul 1646 Francis Scott 2nd Earl Buccleuch 1626-1651 (19) and Margaret Leslie Countess Buccleuch, Countess Wemyss -1688 were married (he was her half third-cousin). Margaret Leslie Countess Buccleuch, Countess Wemyss -1688 by marriage Countess Buccleuch.

On 25 Jul 1646 Francis Scott 2nd Earl Buccleuch 1626-1651 (19) and Margaret Leslie Countess Buccleuch, Countess Wemyss -1688 were married (he was her half third-cousin). Margaret Leslie Countess Buccleuch, Countess Wemyss -1688 by marriage Countess Buccleuch.

In 1673 William Stanley 9th Earl Derby 1655-1702 (18) and Elizabeth Butler Countess Derby 1660-1717 (13) were married (he was her half third-cousin). Elizabeth Butler Countess Derby 1660-1717 (13) by marriage Countess Derby (3C 1485).

In 1673 William Stanley 9th Earl Derby 1655-1702 (18) and Elizabeth Butler Countess Derby 1660-1717 (13) were married (he was her half third-cousin). Elizabeth Butler Countess Derby 1660-1717 (13) by marriage Countess Derby (3C 1485).

On 10 Oct 1675 Robert Ker 3rd Earl Roxburghe 1658-1682 (17) and Margaret Hay Countess Roxburghe -1753 were married (he was her half third-cousin). Margaret Hay Countess Roxburghe -1753 by marriage Countess Roxburghe.

On 10 Oct 1675 Robert Ker 3rd Earl Roxburghe 1658-1682 (17) and Margaret Hay Countess Roxburghe -1753 were married (he was her half third-cousin). Margaret Hay Countess Roxburghe -1753 by marriage Countess Roxburghe.

In 1683 Charles Howard 3rd Earl Carlisle 1669-1738 (14) and Anne Capell Countess Carlisle 1674-1752 (9) were married (he was her half third-cousin).

In 1683 Charles Howard 3rd Earl Carlisle 1669-1738 (14) and Anne Capell Countess Carlisle 1674-1752 (9) were married (he was her half third-cousin).

On 21 Jun 1688 William Cavendish 2nd Duke Devonshire 1672-1729 (16) and Rachel Russell Duchess Devonshire 1674-1725 (14) were married (he was her half third-cousin).

On 21 Jun 1688 William Cavendish 2nd Duke Devonshire 1672-1729 (16) and Rachel Russell Duchess Devonshire 1674-1725 (14) were married (he was her half third-cousin).

Before 29 Jun 1700 John Webb 2nd Baronet Webb -1700 and Mary Blomer Lady Webb -1709 were married (he was her half third-cousin). Mary Blomer Lady Webb -1709 by marriage Lady Webb of Odstock in Wiltshire.

Before 29 Jun 1700 John Webb 2nd Baronet Webb -1700 and Mary Blomer Lady Webb -1709 were married (he was her half third-cousin). Mary Blomer Lady Webb -1709 by marriage Lady Webb of Odstock in Wiltshire.

In 1718 William Widdrington 4th Baron Widdrington 1678-1743 (40) and Catherine Graham were married (he was her half third-cousin).

In 1718 William Widdrington 4th Baron Widdrington 1678-1743 (40) and Catherine Graham were married (he was her half third-cousin).

Before 24 Mar 1745 John Sackville 1713-1765 and Frances Leveson-Gower 1720-1788 were married (he was her half third-cousin).

Before 24 Mar 1745 John Sackville 1713-1765 and Frances Leveson-Gower 1720-1788 were married (he was her half third-cousin).

On 15 Aug 1802 Aubrey Beauclerk 6th Duke St Albans 1765-1815 (36) and Louisa Grace Manners Duchess St Albans were married (he was her half third-cousin). Louisa Grace Manners Duchess St Albans by marriage Duchess St Albans (1C 1684).

On 15 Aug 1802 Aubrey Beauclerk 6th Duke St Albans 1765-1815 (36) and Louisa Grace Manners Duchess St Albans were married (he was her half third-cousin). Louisa Grace Manners Duchess St Albans by marriage Duchess St Albans (1C 1684).

In 1811 Arthur Blundell Sandys Trumbull Hill 3rd Marquess Downshire 1788-1845 (22) and Maria Windsor Marchioness Downshire 1790-1855 (21) were married (he was her half third-cousin). Maria Windsor Marchioness Downshire 1790-1855 (21) by marriage Marchioness Downshire.

In 1811 Arthur Blundell Sandys Trumbull Hill 3rd Marquess Downshire 1788-1845 (22) and Maria Windsor Marchioness Downshire 1790-1855 (21) were married (he was her half third-cousin). Maria Windsor Marchioness Downshire 1790-1855 (21) by marriage Marchioness Downshire.

On 18 May 1818 Hugh Henry Seymour-Conway 1790-1821 (27) and Charlotte Georgiana Cholmondeley 1795-1828 (23) were married (he was her half third-cousin).

On 18 May 1818 Hugh Henry Seymour-Conway 1790-1821 (27) and Charlotte Georgiana Cholmondeley 1795-1828 (23) were married (he was her half third-cousin).

On 29 Nov 1879 Alfonso XII King Spain 1857-1885 (22) and Maria Christina of Austria Queen Consort Spain 1858-1929 (21) were married (he was her half third-cousin) at Madrid. Maria Christina of Austria Queen Consort Spain 1858-1929 (21) by marriage Queen Consort Spain.

On 29 Nov 1879 Alfonso XII King Spain 1857-1885 (22) and Maria Christina of Austria Queen Consort Spain 1858-1929 (21) were married (he was her half third-cousin) at Madrid. Maria Christina of Austria Queen Consort Spain 1858-1929 (21) by marriage Queen Consort Spain.

On 27 Jul 1889 Alexander Duff 1st Duke Fife 1849-1912 (39) and Louise Windsor Duchess Fife 1867-1931 (22) were married (he was her half third-cousin).

On 27 Jul 1889 Alexander Duff 1st Duke Fife 1849-1912 (39) and Louise Windsor Duchess Fife 1867-1931 (22) were married (he was her half third-cousin).

Rhys ap Tewdwr King Deheubarth 1064-1093 and Gwladys ferch Rhiwallon Mathrafal Queen Consort Deheubarth 1060-1137 were married (he was her half third-cousin).

John Grey 8th Baron Grey Wilton 1448-1498 and Anne Grey Baroness Grey Wilton 1450-1514 were married (he was her half third-cousin). Anne Grey Baroness Grey Wilton 1450-1514 by marriage Baroness Grey Wilton (1C 1295).

Algernon Capell 2nd Earl Essex 1670-1710 and Mary Bentinck Countess Essex 1679-1726 were married (he was her half third-cousin). Mary Bentinck Countess Essex 1679-1726 by marriage Countess Essex (9C 1641).

Constantine Clifton 1372-1395 and Margaret Howard 1375-1434 were married (he was her half third-cousin).

Algernon Capell 2nd Earl Essex 1670-1710 and Mary Bentinck Countess Essex 1679-1726 were married (he was her half third-cousin). Mary Bentinck Countess Essex 1679-1726 by marriage Countess Essex (9C 1641).

Robert Rich 2nd Baronet 1648-1699 and Mary Rich were married (he was her half third-cousin).

William Douglas 3rd Duke Touraine 1424-1440 and Janet Lindsay Countess Wigtown 1427-1483 were married (he was her half third-cousin).

Robert Rich 2nd Baronet 1648-1699 and Mary Rich were married (he was her half third-cousin).

Archibald Campbell 4th Earl Argyll 1507-1558 and Helen Hamilton Countess Argyll were married (he was her half third-cousin). Helen Hamilton Countess Argyll by marriage Countess Argyll.

William Francis Leveson-Gower 1868-1949 and Alice Susan Godolphin Osborne 1869-1951 were married (he was her half third-cousin).

John Dunbar 4th Earl Moray -1391 and Marjorie Stewart Countess Moray 1348-1417 were married (he was her half third-cousin).

William Francis Leveson-Gower 1868-1949 and Alice Susan Godolphin Osborne 1869-1951 were married (he was her half third-cousin).

Ranulf Gernon 4th Earl Chester 1099-1153 and Matilda Fitzrobert Countess Chester -1189 were married (he was her half third-cousin).

Henry Scrope 7th Baron Scrope Bolton 1482-1533 and Mabel Dacre Baroness Scrope Bolton 1490-1533 were married (he was her half third-cousin). Mabel Dacre Baroness Scrope Bolton 1490-1533 by marriage Baroness Scrope Bolton.

John Cockayne 1411-1504 and Agnes Vernon 1427-1451 were married (he was her half third-cousin).

Henry Scrope 7th Baron Scrope Bolton 1482-1533 and Mabel Dacre Baroness Scrope Bolton 1490-1533 were married (he was her half third-cousin). Mabel Dacre Baroness Scrope Bolton 1490-1533 by marriage Baroness Scrope Bolton.

Robert Maxwell 6th Lord Maxwell -1552 and Beatrix Douglas Lady Maxwell were married (he was her half third-cousin). Beatrix Douglas Lady Maxwell by marriage Lord Maxwell.

Charles Boyle 4th Earl Cork 4th Earl Orrery 1674-1731 and Elizabeth Cecil Countess Cork 1691-1708 were married (he was her half third-cousin). Elizabeth Cecil Countess Cork 1691-1708 by marriage Countess Cork.

Nicholas Pelham 1517-1560 and Anne Sackville were married (he was her half third-cousin).

Charles Boyle 4th Earl Cork 4th Earl Orrery 1674-1731 and Elizabeth Cecil Countess Cork 1691-1708 were married (he was her half third-cousin). Elizabeth Cecil Countess Cork 1691-1708 by marriage Countess Cork.

Thomas Vernon 1473- and Anne Ludlow 1480- were married (he was her half third-cousin).

Ralph Eure 1464-1539 and Muriel Hastings were married (he was her half third-cousin).

George Seton 4th Lord Seton 1431-1507 and Margaret Campbell Lady Seton 1468-1481 were married (he was her half third-cousin).

Ralph Eure 1464-1539 and Muriel Hastings were married (he was her half third-cousin).

Roger Quincy 2nd Earl Winchester 1195-1264 and Helen Galloway Countess Winchester were married (he was her half third-cousin). Helen Galloway Countess Winchester by marriage Countess Winchester (1C 1207).

Peter Courtenay 1155-1218 and Yolanda Flanders 1175-1219 were married (he was her half third-cousin).

John Sinclair -1576 and Jean Hepburn -1599 were married (he was her half third-cousin).

Charles King Sicily 1227-1285 and Beatrice Provence Queen Consort Sicily 1231-1267 were married (he was her half third-cousin).

Peter Courtenay 1155-1218 and Yolanda Flanders 1175-1219 were married (he was her half third-cousin).

William Hay 1st Earl Erroll 1423-1462 and Beatrice Douglas Countess Erroll were married (he was her half third-cousin). Beatrice Douglas Countess Erroll by marriage Countess Erroll.

Constantine Clifton 1372-1395 and Margaret Howard 1375-1434 were married (he was her half third-cousin).

William Hay 1st Earl Erroll 1423-1462 and Beatrice Douglas Countess Erroll were married (he was her half third-cousin). Beatrice Douglas Countess Erroll by marriage Countess Erroll.

William Douglas 3rd Duke Touraine 1424-1440 and Janet Lindsay Countess Wigtown 1427-1483 were married (he was her half third-cousin).

William Dacre 3rd Baron Dacre Gilsland 7th Baron Greystoke 1493-1563 and Elizabeth Talbot Baroness Dacre Gilsland 1507-1552 were married (he was her half third-cousin). Elizabeth Talbot Baroness Dacre Gilsland 1507-1552 by marriage Baroness Dacre Gilsland (3C 1473).

John Dunbar 4th Earl Moray -1391 and Marjorie Stewart Countess Moray 1348-1417 were married (he was her half third-cousin).

William Dacre 3rd Baron Dacre Gilsland 7th Baron Greystoke 1493-1563 and Elizabeth Talbot Baroness Dacre Gilsland 1507-1552 were married (he was her half third-cousin). Elizabeth Talbot Baroness Dacre Gilsland 1507-1552 by marriage Baroness Dacre Gilsland (3C 1473).

John Cockayne 1411-1504 and Agnes Vernon 1427-1451 were married (he was her half third-cousin).

John Livingston -1547 and Joanna Fleming were married (he was her half third-cousin).

Nicholas Pelham 1517-1560 and Anne Sackville were married (he was her half third-cousin).

John Livingston -1547 and Joanna Fleming were married (he was her half third-cousin).

George Seton 4th Lord Seton 1431-1507 and Margaret Campbell Lady Seton 1468-1481 were married (he was her half third-cousin).

William Livingstone 6th Lord Livingstone -1592 and Agnes Fleming -1597 were married (he was her half third-cousin).

John Sinclair -1576 and Jean Hepburn -1599 were married (he was her half third-cousin).

William Livingstone 6th Lord Livingstone -1592 and Agnes Fleming -1597 were married (he was her half third-cousin).

Archibald Campbell 4th Earl Argyll 1507-1558 and Helen Hamilton Countess Argyll were married (he was her half third-cousin). Helen Hamilton Countess Argyll by marriage Countess Argyll.

Louis "Blind" Bivinids 883-928 and Adelaide Welf were married (he was her half third-cousin).

Ranulf Gernon 4th Earl Chester 1099-1153 and Matilda Fitzrobert Countess Chester -1189 were married (he was her half third-cousin).

Louis "Blind" Bivinids 883-928 and Adelaide Welf were married (he was her half third-cousin).

John Grey 8th Baron Grey Wilton 1448-1498 and Anne Grey Baroness Grey Wilton 1450-1514 were married (he was her half third-cousin). Anne Grey Baroness Grey Wilton 1450-1514 by marriage Baroness Grey Wilton (1C 1295).

Rhys ap Tewdwr King Deheubarth 1064-1093 and Gwladys ferch Rhiwallon Mathrafal Queen Consort Deheubarth 1060-1137 were married (he was her half third-cousin).

Robert Maxwell 6th Lord Maxwell -1552 and Beatrix Douglas Lady Maxwell were married (he was her half third-cousin). Beatrix Douglas Lady Maxwell by marriage Lord Maxwell.

Roger Quincy 2nd Earl Winchester 1195-1264 and Helen Galloway Countess Winchester were married (he was her half third-cousin). Helen Galloway Countess Winchester by marriage Countess Winchester (1C 1207).

Christopher Conyers 2nd Baron Conyers 1491-1538 and Anne Dacre Baroness Conyers 1501-1548 were married (he was her half third-cousin).

Christopher Conyers 2nd Baron Conyers 1491-1538 and Anne Dacre Baroness Conyers 1501-1548 were married (he was her half third-cousin).

Charles King Sicily 1227-1285 and Beatrice Provence Queen Consort Sicily 1231-1267 were married (he was her half third-cousin).

Thomas Vernon 1473- and Anne Ludlow 1480- were married (he was her half third-cousin).