Katherine married Hugh SWYNFORD on 13 Jan 1366 in St. Clement Danes Church, London, England. Hugh died about 1372. [Group Sheet] [Family Chart]

1. Thomas SWYNFORD

Katherine married John Of Gaunt PLANTAGENET, King Of Castile And Leon in 1397 in Lincoln Cathedral, , ENG. John (son of Edward III, King Of England and Philippa OF HAINAULT) was born in Mar 1340 in Gaunt, Flanders (Now Belgium); died on 3 Feb 1399 in Leicester Castle; was buried in St. Paul's Cathedral, London, ENG. [Group Sheet] [Family Chart]

1. Cardinal Henry DE BEAUFORT was born in 1367; died in 1447.
2. Sir John BEAUFORT, * 1st Earl of Somerset was born in 1373; died in 1410.
3. Thomas BEAUFORT, Duke Of Exeter was born about 1377; and died.
4. Joan DE BEAUFORT was born about 1379 in Beaufort Castle, Anjou, France; died on 13 Nov 1440 in Howden, Yorkshire, England.

Family/Spouse: Richard II KING OF ENGLAND. Richard (son of Edward Of Woodstock PRINCE OF WALES and Joan "The Fair" PLANTAGENET, Of Kent) died in 1399. [Group Sheet] [Family Chart]