Grecia de Briwere was born circa 1176 to William de Briwere (c1145-1226) and Beatrice de Vaux (c1149-1217) and died before 1215 of unspecified causes. She married Reginald de Braose, 9th Baron Abergavenny (1178-1228) 1215 JL .
|Offspring of Reginald Braose and Grecia de Briwere (c1176-bef1215)|
|William de Braose, 10th Baron Abergavenny (c1197-1230)||1197 Brecon, Wales, United Kingdom||2 May 1230||Eva Marshal (1203-1246)|
|Matilda de Braose|