Mary married Earl Walter De Burgh about 1253 in 1st Wife. Walter (son of Richard De Burgh and Egidia (Jill) De Lacy) was born about 1230 in Galway Castle, Connaught, Ireland; died on 28 Jul 1271 in Galway Castle, Connaught, Ireland; was buried in Monastery Of Athassel, Tipperary, Ireland. [Group Sheet] [Family Chart]