Margaret de Braose was born 1177 to William de Braose, 7th Baron Abergavenny (c1153-1211) and Matilda de Saint-Valery (c1155-1210) and died after 1255 of unspecified causes. She married Walter de Lacy (c1172-1241) .
|Offspring of Margaret de Braose and Walter de Lacy (c1172-1241)|
|Pernelle de Lacy (c1201-aft1287)||1201||1287||Raoul VI de Tosny (c1189-c1239)|
|Gilbert de Lacy (?-1234)||25 December 1230||Isabel Bigod (1212-1252)|
|Egidia de Lacy (c1205-?)||1205||Richard Mor de Burgh (c1194-1242)|