Duke Cornwall is in Dukes.
On 17 Mar 1337 Edward "Black Prince" Plantagenet Prince of Wales 1330-1376 (6) was appointed Duke Cornwall.
On 09 Aug 1386 King Henry V of England 1386-1422 was appointed Duke Cornwall.
On 25 Oct 1460 Parliament enacted the Act of Accord 39 Hen VI by which Richard 3rd Duke York (49) was declared heir to Henry VI King England II King France 1421-1471 (38) disinheriting Edward of Westminster (7). At the same Parliament on 31 Oct 1460 Richard 3rd Duke York (49) was created Prince of Wales, Earl Chester, Duke Cornwall and Lord Protector.
On 02 Nov 1470 Edward V King England 1470- was appointed Duke Cornwall.
On 26 Jun 1483 Edward York Prince of Wales 1473-1484 (9) was created as Duke Cornwall.
On 20 Sep 1486 Arthur Tudor Prince of Wales 1486-1502 was created as Duke Cornwall.
On 28 Jun 1491 Henry VIII was born to Henry VII King England and Ireland 1457-1509 (34) and Elizabeth York Queen Consort England 1466-1503 (25) at Palace of Placentia. He was created as Duke Cornwall.
On 15 Oct 1537 the future Edward VI was christened by John Stokesley Bishop of London 1475-1539 (62) at the Chapel Royal in Hampton Court Palace. Thomas Cranmer Archbishop of Canterbury 1489-1556 (48) performed the Baptismal Rites, and was appointed Godfather. Thomas Howard 3rd Duke Norfolk 1473-1554 (64) and Mary Tudor I Queen England and Ireland 1516-1558 (21) were Godparents.
Henry Bourchier 2nd Earl Essex 3rd Count Eu -1540 carried the Salt. Charles Brandon 1st Duke Suffolk 1484-1545 (53) was Godfather and supported the Marchioness of Exeter. Richard Long 1494-1546 (43) was knighted. Thomas Cromwell 1st Earl Essex 1485-1540 (52), Philip Boteler 1492-1545 (45), John Vere 15th Earl Oxford 1471-1540 (66) and John Gage Lord Chamberlain 1479-1556 (57) attended. Mary Scrope 1476-1548 (61) carried Lady Mary's train. Robert Radclyffe 1st Earl of Sussex 1483-1542 (54) carried a covered basin. Robert Radclyffe 1st Earl of Sussex 1483-1542 (54) carried the canopy.
Edward Seymour 1st Duke Somerset 1500-1552 (37) helped his young niece the future Elizabeth I to carry the Crisom. Henry Courtenay 1st Marquess Exeter 1496-1538 (41) supported his wife Gertrude Blount Marchioness Exeter 1503-1558 (34) to carry the child. Thomas Boleyn 1st Earl Wiltshire and Ormonde 1477-1539 (60) bore a taper of virgin wax. William Fitzalan 18th Earl Arundel 1476-1544 (61) carried the train of the Prince's robe. Christopher Barker Garter King of Arms -1550 proclaimed the Prince's titles. Arthur Hopton 1489-1555 (48) attended.
Henry Knyvet of Charlton Wiltshire 1510-1547 (27), Edward Neville 1471-1538 (66), Thomas Seymour 1st Baron Seymour of Sudeley 1508-1549 (29), Richard Long 1494-1546 (43) and John Wallop 1490-1551 (47) carried the canopy.
Bishop Robert Parfew aka Warton -1557 and Bishop John Bell -1556 attended.
On 24 Mar 1603 Henry Frederick Stewart Prince of Wales 1594-1612 (9) was created as Duke Cornwall.
On 29 May 1630 Charles II King England Scotland and Ireland 1630-1685 was born to King Charles I of England, Scotland and Ireland 1600-1649 (29) and Henrietta Maria Bourbon Queen Consort England 1609-1669 (20) at St James's Palace. He was created as Duke Cornwall and Duke Rothesay the same day.