William III de FERRERS
William III de was born about 1193 in Derby, Derbyshire, England.  He died before March 28th, 1254 in Evington, Pembrokeshire, England.

 Sybil MARSHAL
Sybil was born about 1191 in Pembroke, pembrokeshire, England.  She died before 1238 in England.

 Maud Matilda de FERRERS
Maud Matilda de was born about 1230 in Derby, derbyshire, England.