Family: John Gaunt Plantagenet, King of Castile and Leon / Katherine DeRoet (F3338)
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Male
John Gaunt Plantagenet, King of Castile and Leon
Birth 14 March 1340 Abbaye De St Bavon, Ghent, Flandre Orientale, Belgium 
Death 3 Feb 1399 Leicester Castle, Leicestershire, England Burial Marriage Father Edward III King of England | F1539 Group Sheet Mother Philippa of Hainault | F1539 Group Sheet
Female
Katherine DeRoet
Birth 25 Nov 1350 Somme, Picardie, France Death 10 May 1403 Lincoln, Lincolnshire, England Burial Other Spouse Hugh Swynford | F3339 Marriage Father Payn De Roet | F6341 Group Sheet Mother
Male
John de Beaufort
Birth 1371 Beaufort, Maine-et-Loire, Pays De La Loire, France Death 16 March 1410 London, City of London, Greater London, England Burial Canterbury, City of Canterbury, Kent, England Spouse Margaretha Holand | F4737 Marriage