John married Margaret Princess Of ENGLAND in 1359 in Queen's Chapel, Reading, Berkshire, England. Margaret (daughter of Edward III, King of England and Philippa, Queen of England) was born on 20 Jul 1346 in , Windsor Castle, Berkshire, England; died after 1 Oct 1361 in Sp; was buried in Abbey Church, Abingdon, Berkshire, England. [Group Sheet] [Family Chart]