Roger  (Baron) Fitz Corbet
Roger  (Baron) Fitz was born in 1042 in Pays de Caux, Normandy, France.¹   He died about 1092.¹ 

 Margaret Unknown
Margaret was born in 1332.  She died at the age of 63 in 1395.

 Sybilla Corbet Lady of Alcester
Sybilla was born about 1075 in Alcester, Warwickshire, England.²   She died after 1157 in of Pontesbury and Woodcote,Shropshire,England.¹