Family: 1st Duke of Lancaster John of Gaunt Plantagenet / Constance de Castilla (F906)
m. 21 Sep 1371
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Male
1st Duke of Lancaster John of Gaunt Plantagenet
Birth 24 Jun 1340 Gent, Oost-Vlaanderen, Belgium 
Death 4 Feb 1399 Leicestershire, England Burial 15 Mar 1398 London, London, England Marriage 21 Sep 1371 Bordeaux, Gironde, Aquitaine, France Other Spouse Blanche of Lancaster | F1003 Marriage 1359 Other Spouse Katherine Swynford Roet | F739 Marriage 13 Jan 1396 Father King of England Edward III of Windsor Plantagenet | F882 Group Sheet Mother Philippa d'Avesnes | F882 Group Sheet
Female
Constance de Castilla
Birth 1354 Castro, Asturias, Asturias, Spain Death 24 Mar 1394 Leicester, Leicestershire, England Burial Leicester, Leicestershire, England Father Pedro de Castilla, I | F905 Group Sheet Mother Maria Juana de Padilla | F905 Group Sheet