Blanche married Duke of Lancaster John Plantagenet on 19 May 1359 in Reading Abbey, Reading, Berkshire, England, United Kingdom. John (son of King of England Edward Plantagenet, III and Philippa, of Hainault) was born in Mar 1340 in St. Bavon's Abbey, Ghent, Flanders, Netherlands; died on 3 Feb 1399 in Leicester Castle, Leicester, Leicestershire, England, United Kingdom. [Group Sheet] [Family Chart]

1. King of England Henry Plantagenet, IV was born on 30 May 1366 in Bolingbrooke Castle, Billingborough, Lincolnshire, England, United Kingdom; died on 20 Mar 1413 in London, Greater London, England, United Kingdom.