Family/Spouse: Margaret DE PERCY. Margaret (daughter of Henry DE PERCY, K.G. and Idonea DE CLIFFORD) was born about 1318 in Alnwick, England; died on 02 Sep 1375 in Gyng, New Buttsbury, Essez, England; was buried in Church Of Friars, Chelmsford, Essex, England. [Group Sheet] [Family Chart]