Sir Richard of Mitford Bertram
Richard of Mitford was born about 1076 in , Normandy, France.

 Sybilla (Sigel) Mitford
Sybilla (Sigel) was born about 1080 in Castle Mitford, Nhum, England..  Sybilla (Sigel) is no longer alive.

 Baron William Bertram
William was born about 1099 in Castle Mitford, Nhum, England..