 Pierre I De Grandson, son of Sir Ebal III De Grandson and Beatrix De Geneva.Born 1190 at Neuchatel, died Aug 31, 1263 at Neuchatel, Neuchatel, Switzerland, 72 or 73 years Married at Neuchatel, Neuchatel Canton, Switzerland to:  Agnes De Neuchatel, daughter of Ulric De Neuchatel and N.N..Born 1194 at Neuchatel, died 1263 at ,, , England, 68 or 69 years | |||