Joan married II Earl of Salisbury William De Montague before 15 Oct 1348 in Donyatt, Somerset, England. William (son of William De Montague, 1st Earl and Katherine De Grandison) was born on 20 Jun 1328 in Donyatt, Somerset, England; died on 03 Jun 1397. [Group Sheet] [Family Chart]

Joan married Prince of England and Wales Edward Plantagenet on 10 Oct 1361 in Windsor, Berkshire, England. Edward (son of King of England EDWARD PLANTAGENET, III and Queen of England PHILIPPA HAINAULT) was born on 15 Jun 1330 in Palace, Woodstock, Oxfordshire, England; died on 8 Jun 1376 in Palace, Westminster, Berkshire, England; was buried on 29 Sep 1376 in Canterbury, Kent, England. [Group Sheet] [Family Chart]