19 Sep is in September.
On 19 Sep 690 Archbishop Theodore of Tarsus (age 88) died.
On 19 Sep 993 Arnulf Gerulfing Count Holland (age 43) died. His son Dirk Gerulfing III Count Holland succeeded III Count Holland.
On 19 Sep 1212, possibly 20th, possibly 1213, Catherine Countess Blois and Clermont en Beauvais died.
On 19 Sep 1356 the army of Edward "Black Prince" (age 26) defeated the French and Scottish army led by King John "The Good" II of France (age 37) at the Battle of Poitiers
King John "The Good" II of France (age 37) was captured by three captains including Ivon aka John Fane.
The the English army included: Bernard Brocas (age 26), Thomas Felton (age 26), James Audley (age 38), Thomas Beauchamp 11th Earl Warwick (age 43), Bartholomew "The Younger" Burghesh 2nd Baron Burghesh (age 28), Reginald Cobham 1st Baron Cobham (age 61), Edward Despencer 1st Baron Despencer, Baron Burghesh (age 21), Ralph Ferrers (age 27), William Scrope (age 31), William Montagu 2nd Earl Salisbury (age 28), Walter Paveley 4th Baron Burghesh (age 37), Robert Ufford 1st Earl Suffolk (age 58), William Ufford 2nd Earl Suffolk (age 18), John de Vere 7th Earl of Oxford (age 44), John Willoughby 3rd Baron Willoughby (age 33), Thomas Arderne (age 19), Enion Sais Brecon, John Chandos (age 36), Richard Pembridge (age 36), Jean Grailly (age 25), Robert de Fouleshurst (age 26) and John Sully (age 73)
John Savile of Shelley and Golcar (age 31) probably fought having received letters of protection to travel overseas.
Hugh Courtenay 10th Earl Devon (age 53) protected the baggage train.
The French and Scottish army included: King John "The Good" II of France (age 37), Philip "Bold" Valois II Duke Burgundy (age 14), Jean Bourbon I Count La Marche (age 12), Archibald "Grim" Douglas 3rd Earl Douglas (age 26), John "Sans Terre" Artois 1st Count Eu (age 35); all captured.
Guichard d'Angle 1st Earl Huntingdon and William Douglas 1st Earl Douglas (age 33) fought.
Peter Bourbon Duke Bourbon (age 45) was killed. His son Louis Bourbon II Duke Bourbon (age 19) succeeded II Duke Bourbon.
On or before 19 Sep 1376 Marie I Countess Auvergne was born to Godfroy of Auvergne Seigneur de Montgascon and Roche-Savine and Jeanne de Ventadour.
On 19 Sep 1377 Albert Habsburg IV Duke Austria was born to Albert "With the Pigtail" Habsburg III Duke Austria (age 28) and Beatrix Hohenzollern Duchess Austria (age 15).
On 19 Sep 1502 Mynour, the Inglis payntour (age 42) delivered four portraits of the English royal family to James IV of Scotland (age 29) at Stirling Castle [Map].
Letters and Papers 1517. 19 Sep 1517. R.O. 3692. SPINELLY to HENRY VIII.
The King Catholic arrived this morning on the coast of Biscay, but has not yet decided where to land, as the sickness is raging. A ship was burnt between Dovor and Wynselse, containing the King's horses and apparel, commanded by a Burgundian named Mont Richard. No help could be given. On the third day reached Usent with a strong wind from the S.E., when they deliberated about going to Plymouth. Since then they have been becalmed. At sea at the Sell, 19 Sept. 1517. Signed.
Pp. 2. Add.
Before 19 Sep 1534 Thomas Berkeley 6th Baron Berkeley (age 29) and Anne Savage Baroness Berkeley (age 38) were married. She by marriage Baroness Berkeley. They were half third cousin once removed. He a great x 5 grandson of King Edward III of England. 
On 19 Sep 1534 Thomas Berkeley 6th Baron Berkeley (age 29) died at Stone Aylesbury. He was buried at St John the Baptist Church Stone Aylesbury. On 26 Nov 1534 His son Henry Berkeley 7th Baron Berkeley succeeded posthumously 7th Baron Berkeley 2C 1421.
On 19 Sep 1551 Henry III King France was born to King Henry II of France (age 32) and Catherine Medici Queen Consort France (age 32).
Henry Machyn's Diary. 19 Sep 1556. The xix day of September dyd the Quene('s) (age 40) grace remove from Croydun the bysshope of Canthurbere('s) plasse unto sant James in the feld be-yond Charyng-crosse, her own plasse, with my lord cardenall (age 56) and (unfinished).
Note. P. 114. The Queen's return from Croydon. "Item, payde for ryngyng of the belles at the cumyng of the queenes majestie from Croydyn to Westminster the xxjth of September iiijd." This entry, from the accounts of St. Margaret's Westminster, differs two days from our Diarist.
Henry Machyn's Diary. 19 Sep 1557. The xix day of September cam a commondement downe to all parryche(s) in London that they shuld go in prossessyon at Powlles, and Te Deum laudamus songe; all the chyrches in London to synge, and rynge for wynnynge of Perro [Note. Assumed to be a reference to John Perrot (age 28) who fought at the Battle of St Quentin] in Franse and odur plasses.
On 19 Sep 1580 Catherine Willoughby Duchess Suffolk (age 61) died. Her son Peregrine Bertie 13th Baron Willoughby (age 24) succeeded 13th Baron Willoughby de Eresby. Mary Vere Baroness Willoughby Eresby by marriage Baroness Willoughby de Eresby.
She was buried at St James' Church Spilsby [Map] with her second husband Richard Bertie Baron Willoughby (age 63). Elizabethan Period. Sideboard Tomb. Cornice supported by three figures of a monk and two wildmen, each holding aloft a shield of arms. In the frieze are flowers, fruit and escutcheons.
Peregrine Bertie 13th Baron Willoughby: On 12 Oct 1555 he was born to Richard Bertie Baron Willoughby (age 38) and Catherine Willoughby Duchess Suffolk (age 36) at Wesel, Wesel. He was named for his parents peregrinations through Germany avoiding religious persecution. On 14 Oct 1555 Peregrine Bertie 13th Baron Willoughby was baptised at Church of St Willibrord, Wesel, Wesel. On 25 Dec 1577 Peregrine Bertie 13th Baron Willoughby (age 22) and Mary Vere Baroness Willoughby Eresby were married. She the daughter of John de Vere 16th Earl of Oxford and Margery Golding Countess of Oxford.
Mary Vere Baroness Willoughby Eresby: She was born to John de Vere 16th Earl of Oxford and Margery Golding Countess of Oxford. Around 24 Jun 1624 she died.
Richard Bertie Baron Willoughby: On 25 Dec 1516 he was born to Thomas Bertie (age 36). After 1551 Richard Bertie Baron Willoughby (age 34) and Catherine Willoughby Duchess Suffolk (age 31) were married. He by marriage Baron Willoughby de Eresby. In 1564 Richard Bertie Baron Willoughby (age 47) was appointed High Sheriff of Lincolnshire. On 09 Apr 1582 Richard Bertie Baron Willoughby (age 65) died at Bourne. He was buried at St James' Church Spilsby.
Before 19 Sep 1581. Frans Pourbus the Elder (age 36). Portrait of George Seton 7th Lord Seton (age 50) and his children Robert Seton 1st Earl Winton (age 28), John Seton, Alexander Seton 1st Earl Dunfermline (age 26), William Seton Master of Seton and Margaret Seton Lady Paisley (age 24).
On 19 Sep 1610 Frederick IV Elector Palatine (age 36) died.
On 19 Sep 1610 Frederick Palatinate Simmern V Elector Palatine Rhine (age 14) was elected V Elector Palatine Rhine.
On 19 Sep 1678 Charles "Don Carlo" Fitzcharles 1st Earl Plymouth (age 21) and Bridget Osborne Countess Plymouth were married in Wimbledon, Surrey. She by marriage Countess Plymouth. She the daughter of Thomas Osborne 1st Duke Leeds (age 46) and Bridget Bertie Duchess Leeds (age 49). He the son of King Charles II of England Scotland and Ireland (age 48) and Catherine Pegge (age 43).
On 19 Sep 1705 William Craven 5th Baron Craven was born to John Craven.
On 19 Sep 1708 Francis Newport 1st Earl Bradford (age 88) died at Twickenham. His son Richard Newport 2nd Earl Bradford (age 64) succeeded 2nd Earl Bradford 1C 1694, 2nd Viscount Newport of Bradford in Shropshire, 3rd Baron Newport of High Ercall in Shropshire. Mary Wilbraham Countess Bradford (age 47) by marriage Countess Bradford.
On 19 Sep 1710 John Annesley 4th Earl Anglesey (age 34) died. His brother Arthur Annesley 5th Earl Anglesey (age 30) succeeded 5th Earl Anglesey 2C 1661, 6th Viscount Valentia 2C 1642, 5th Baron Annesley Newport Pagnell Buckinghamshire. Mary Thompson Countess Anglesey by marriage Countess Anglesey.
On 19 Sep 1718 Henry Howard 6th Earl Suffolk (age 48) died. He was buried at Waldon Priory and Abbey [Map]. His son Charles William Howard 7th Earl Suffolk (age 25) succeeded 7th Earl Suffolk 4C 1603.NOTEXT
On 19 Sep 1723 Robert Sutton 2nd Baron Lexinton (age 61) died.
On 19 Sep 1729 Cornwallis Maude 1st Viscount Hawarden was born to Robert Maude 1st Baronet (age 52).
On 19 Sep 1751 George Pitt 2nd Baron Rivers was born to George Pitt 1st Baron Rivers (age 30) at Angers [Map].
On 19 Sep 1772 George Henry Lee 3rd Earl Lichfield (age 54) died. His uncle Robert Lee 4th Earl Lichfield (age 66) succeeded 4th Earl Lichfield 2C 1674, 8th Baronet Lee of Quarrendon in Buckinghamshire.
After 19 Sep 1772. All Saints Church Spelsbury [Map]. Monument to George Henry Lee 3rd Earl Lichfield (deceased) and Dinah Frankland Countess Lichfield (age 53) sculpted by William Tyler (age 44).
Dinah Frankland Countess Lichfield: In 1719 she was born to Thomas Frankland 3rd Baronet (age 34) and Dinah Topham Lady Thirkleby. On 15 Feb 1743 George Henry Lee 2nd Earl Lichfield (age 52) died at Spelsbury. His son George Henry Lee 3rd Earl Lichfield (age 24) succeeded 3rd Earl Lichfield 2C 1674, 7th Baronet Lee of Quarrendon in Buckinghamshire. Dinah Frankland Countess Lichfield (age 24) by marriage Countess Lichfield. On 16 Jan 1745 George Henry Lee 3rd Earl Lichfield (age 26) and Dinah Frankland Countess Lichfield (age 26) were married. He the son of George Henry Lee 2nd Earl Lichfield and Frances Hales Countess Lichfield (age 48). He a great grandson of King Charles II of England Scotland and Ireland. On 08 Jan 1779 Dinah Frankland Countess Lichfield (age 60) died.
On 19 Sep 1777 Captain George Marlay (age 29) fought at the Battle of Freeman's Farm.
On 19 Sep 1780 James "Wicked Earl" Cecil (age 66) died. His son James Cecil 1st Marquess Salisbury (age 32) succeeded 6th Earl Salisbury 5C 1605. Mary Amelia Hill Marchioness Salisbury (age 30) by marriage Countess Salisbury.
On 19 Sep 1791 Robert Henry Herbert 12th Earl Pembroke 9th Earl Montgomery was born to George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 32) and Elisabeth Beauclerk (age 25). He a great x 3 grandson of King Charles II of England Scotland and Ireland. Coefficient of inbreeding 6.26%. 
On 19 Sep 1843 John Butler 2nd Marquess Ormonde (age 35) and Frances Paget Marchioness Ormonde (age 26) were married. She by marriage Marchioness Ormonde. He the son of James Wandesford Butler 1st Marquess Ormonde and Grace Louisa Staples Marchioness Ormonde.
On 19 Sep 1862 George Egerton 2nd Earl Ellesmere (age 39) died. His son Francis Egerton 3rd Earl Ellesmere (age 15) succeeded 3rd Earl Ellesmere.
On 19 Sep 1867 William Edwardes 4th and 1st Baron Kensington (age 32) and Grace Elizabeth Douglas Baroness Kensington (age 24) were married.
On 19 Sep 1872 Victor Albert George Child-Villiers 7th Earl Jersey (age 27) and Margaret Elizabeth Leigh Countess Jersey (age 22) were married. She by marriage Countess Jersey. He the son of George Child-Villiers 6th Earl Jersey and Julia Peel Countess Jersey. They were half fourth cousins.
On 19 Sep 1887 Sibyl Marcia Graham Baroness Houghton (age 30) died suddenly. Monument at St Bertoline's Church, Barthomley [Map] sculpted by Joseph Edgar Boehm (age 53).
Sibyl Marcia Graham Baroness Houghton: On 23 Jun 1857 she was born to Frederick Ulric Graham 3rd Baronet (age 37) and Jane Hermione Seymour Lady Graham (age 25). Coefficient of inbreeding 3.57%. On 03 Jun 1880 Robert Offley Ashburton Crewe Milnes 1st Marquess of Crewe (age 22) and Sibyl Marcia Graham Baroness Houghton (age 22) were married. On 11 Aug 1885 Robert Moncton Milnes 1st Baron Houghton (age 76) died. His son Robert Offley Ashburton Crewe Milnes 1st Marquess of Crewe (age 27) succeeded 2nd Baron Houghton of Great Houghton in the West Riding of Yorkshire. Sibyl Marcia Graham Baroness Houghton (age 28) by marriage Baroness Houghton of Great Houghton in the West Riding of Yorkshire.
On 19 Sep 1910 Archbishop William Dalrymple Maclagan (age 84) died.
On 19 Sep 1934 Charles De Vere Beauclerk 11th Duke St Albans (age 64) died. His brother Osborne De Vere Beauclerk 12th Duke St Albans (age 59) succeeded 12th Duke St Albans 1C 1684, 12th Earl Burford, 12th Baron Heddington. Beatrix Petty-Fitzmaurice Duchess St Albans (age 57) by marriage Duchess St Albans.
On 19 Sep 1951 Gilbert Heathcote-Willoughby-Drummond 2nd Earl Ancaster (age 84) died. His son Gilbert James Heathcote-Willoughby-Drummond 3rd Earl Ancaster (age 43) succeeded 3rd Earl Ancaster in Lincolnshire, 27th Baron Willoughby de Eresby, 4th Baron Aveland, 8th Baronet Heathcote of London. Nancy Phyllis Louise Astor Countess Astor (age 42) by marriage Countess Ancaster in Lincolnshire.
After 19 Sep 1951. Church of St Michael and All Angels Edenham [Map]. Monument to Gilbert Heathcote-Willoughby-Drummond 2nd Earl Ancaster (deceased).
On 19 Sep 1960 Montague Eliot 8th Earl of St Germans (age 90) died. His son Nicholas Eliot 9th Earl of St Germans (age 46) succeeded 9th Earl St Germans, 10th Baron Eliot of St Germans in Cornwall.
On 19 Sep 1968 Ivor Mervyn Vigors Guest 4th Viscount Wimborne was born to Ivor Fox-Strangways Guest 3rd Viscount Wimborne (age 28).
On 19 Sep 1973 Sidney Munroe Archibald Vernon 5th Baron Lyveden (age 84) died.