Family: 1st Duke of Lancaster John of Gaunt Plantagenet / Blanche of Lancaster (F4661)
m. 1359
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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 1359 Other Spouse Constance de Castilla | F4660 Marriage 21 Sep 1371 Bordeaux, Gironde, Aquitaine, France Other Spouse Duchess of Lancaster Katherine Swynford de Roet | F4652 Marriage 13 Jan 1396 Father King of England Edward III of Windsor Plantagenet | F4653 Group Sheet Mother Philippa d'Avesnes | F4653 Group Sheet
Male
Henry IV Bolingbroke Lancaster Plantagenet
Birth 3 Apr 1367 Bolingbroke Castle, England Death 20 Mar 1413 Westminster, London, England Burial 1413 Canterbury, Kent, England Spouse Mary de Bohun | F5079 Marriage 1380 Spouse Duchesse de Bretagne Juana de Navarre | F5080 Marriage 7 Feb 1403 Winchester, Hampshire, England