Catherine married John "Of Gaunt" Prince Of ENGLAND, [DUKE OF LANCASTER] on 13 Jan 1396/97 in , Lincoln, Lincolnshire, England. John was born in Mar 1340 in Abbaye de St Bavon, Ghent, Flandre-Orientale, Belgium; died on 3 Feb 1398/99 in Leicester Castle, Leicester, Leicestershire, England; was buried on 15 Mar 1398/99 in St Paul's Cathedral, London, Middlesex, England. [Group Sheet] [Family Chart]

1. Henry "Cardinal" BEAUFORT, [BISHOP OF LINCOLN] was born about 1376 in Chateau, De Beaufort, Meurthe-et-Moselle, France; was christened in Chateau, De Beaufort, Meurthe-et-Moselle, France; died on 11 Apr 1447 in , Winchester, Hampshire, England; was buried in Cathedral, Winchester, Hampshire, England.
2. Joan De BEAUFORT, [COUNTESS OF WESTMORLAND] was born about 1375 in Chateau De Beaufort, Meuse-et-Loire, France; died on 13 Nov 1440 in , Howden, Yorkshire, England; was buried in Lincoln Catheral, Lincoln, Lincolnshire, England.
3. John "Fairborn" BEAUFORT, [MARQUESS OF SOMERSET K.G.] was born about 1371 in Near Pottersgate, Lincolnshire, England; died on 16 Mar 1409/10 in St Catherine By The Tower Hospital, London, Middlesex, England; was buried in St Michael's Chapel, Canterbury Cathedral, Kent, England.
4. Blanche BEAUFORT was born about 1373 in Beaufort Castle, Anjou, France; died before 1397.
5. Thomas BEAUFORT, [DUKE OF EXETER] was born about Jan 1377 in Chateau De Beaufort, Meurthe-et-Moselle, Anjou, France; died on 31 Dec 1426 in Greenwich Manor, East Greenwich, Kent, England; was buried in Abbey, Bury St. Edmunds, Suffolk, England.

Catherine married Hugh De SWYNFORD, [SIR KNIGHT] in May 1366 in St. Clements Danes, Westminster, Middlesex, England. [Group Sheet] [Family Chart]