Blanche married John, {of Gaunt} Duke of Lancaster 13 May 1359, Reading, , , England. John (son of Edward, III King of England and Philippa, of Hainault) was born Mar 1340, Ghent; died 3 Feb 1399, Leicester Castle. [Group Sheet]

1. Philippa, of Lancaster was born Abt 1360; died 1415.
2. Elizabeth was born 1364; died 1426.
3. Henry, IV King of England was born 4 Apr 1366, Bolingbrooke Castle; died 20 Mar 1413, London, , , England; was buried , Canterbury Cathedral, , , England.