John de Beaufort, 1st Marquess of Somerset, 1st Marquess of Dorset, 1st Earl of Somerset, was born circa 1371 to John of Gaunt, 1st Duke of Lancaster (1340-1399) and Catherine De Roet (1350-1403) and died 16 March 1409 of unspecified causes. He married Margaret Holland (1385-1439) 28 September 1397 JL . Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Henry II of England (1133-1189)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s.



Children



Offspring of John Beaufort, 1st Earl of Somerset and Margaret Holland (1385-1439)
Name Birth Death Joined with
Margaret Beaufort (c1400-1449)
Henry Beaufort, 2nd Earl of Somerset (1401-1418)
John Beaufort, 1st Duke of Somerset (1404-1444) 25 March 1404 27 May 1444 Margaret Beauchamp (c1410-1482)
Thomas Beaufort, Earl of Perche (1405-1432)
Joan Beaufort (c1406-1445) 1406 15 July 1445 Dunbar, East Lothian James I, King of Scotland (1394-1437) James I, King of Scotland (1394-1437) James Stewart (c1383-aft1451)
Edmund Beaufort, 2nd Duke of Somerset (1406-1455) 1406 22 May 1455 Eleanor Beauchamp (1408-1467)
















Footnotes (including sources)

‡ General
Community content is available under CC-BY-SA unless otherwise noted.
Margaret Beaufort (c1400-1449)+Henry Beaufort, 2nd Earl of Somerset (1401-1418)+John Beaufort, 1st Duke of Somerset (1404-1444)+Thomas Beaufort, Earl of Perche (1405-1432)+Joan Beaufort (c1406-1445)+Edmund Beaufort, 2nd Duke of Somerset (1406-1455) +
March 16, 1409 JL+
John de Beaufort +
Alfred the Great (849-899)/s +, Charlemagne (747-814)/s +, Henry II of England (1133-1189)/s +, Hugh Capet (c940-996)/s +, William I of England (1027-1087)/s +  and Rollo of Normandy (860-932)/s +
John Beaufort, 1st Earl of Somerset +
Beaufort +
1st Marquess of Somerset +, 1st Marquess of Dorset +  and 1st Earl of Somerset +
September 28, 1397 JL+
John Beaufort, 1st Earl of Somerset +