William married Margaret Neville on 8 May 1341. Margaret (daughter of 2nd Lord Neville Ralph Neville and Alice d'Audley) was born on 12 Feb 1341 in Durham, England; died on 12 May 1372 in Alnwick, Northumberland, England; was buried in 1372 in Alnwick, Northumberland, England. [Group Sheet] [Family Chart]