Family: John Beaufort, 1st Earl of Somerset / Margaret Holland, Duchess of Clarence (F1156)
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Male
John Beaufort, 1st Earl of Somerset
Birth 1373 Anjeux, Haute-Saône, Franche-Comté, France 
Death 16 Mar 1410 St Catherine, England Burial Marriage Father John of Gaunt, 1st Duke of Lancaster | F203 Group Sheet Mother Katherine de Roet Swynford, Duchess of Lancaster | F203 Group Sheet
Female
Margaret Holland, Duchess of Clarence
Birth 1385 Death 31 Dec 1439 Burial Father Thomas Holland, 2nd Earl of Kent | F1406 Group Sheet Mother Alice FitzAlan, Countess of Kent | F1406 Group Sheet
Female
Joan Beaufort, Queen consort of Scots
Birth 1404 Westminster, England Death 15 Jul 1445 Dunbar Castle Burial Spouse James I, King of Scotland | F517 Marriage Spouse James Stewart, the Black Knight of Lorn | F261 Marriage
Male
John Beaufort, 1st Duke of Somerset, 3rd Earl of Somerset
Birth 25 Mar 1404 England Death 27 May 1444 England Burial Wimborne Minster, East Dorset District, Dorset, England Spouse Lady Margaret Beauchamp | F1244 Marriage
Male
Edmund Beaufort, 2nd Duke of Somerset
Birth 1406 Death 22 May 1455 Burial Spouse Lady Eleanor Beauchamp, Baroness de Ros and Duchess of Somerset | F919 Marriage