John married Princess of England Margaret on 19 May 1359 in Queen's Chapel, Reading, Berkshire, England. Margaret (daughter of King of England EDWARD PLANTAGENET, III and Queen of England PHILIPPA HAINAULT) was born on 20 Jul 1346 in Windsor, Berkshire, England; died after 01 Oct 1361 in Sp; was buried in Abbey Church, Abingdon, Berkshire, England. [Group Sheet] [Family Chart]