Cecily de Baliol, d. bef. 1273; m. Sir John de Burgh, d. shortly bef. 3 Mar 1279/80, feudal Baron Lanvallei of Walkern, son of John de Burgh, Knight 1229, b. 1210, d. 1275 (son of Hubert de Burgh, Earl of Kent, by Beatrice, daughter of William de Warenne of Wormgay) and Hawise de Lanvallei, d. 1249, and grandson of William de Lanvallei, d. 1217, Magna Charta Surety 1215, of Great Bromley, Essex. Sir John and Cecily had 3 daughters, coheirs: (1) Devorguilla, wife of Sir Robert Fitz Walter; (2) Hawise, wife of Sir Robert de Grelle; (3) Margery, a nun. [Ancestral Roots]