Robert De Ferrers IV Earl of Derby
Robert De Ferrers IV Earl of was born in 1100 in Ferrers, Derbyshire, England.  He died at the age of 60 in 1160 in Merevale, Warwick, England.

 Margaret Peverell
Margaret was born in 1115.

 William Ferrers V Earl of Derby
William Ferrers V Earl of was born in 1140 in Ferrers, Derbyshire, England.  He died at the age of 49 on December 31st, 1189 in Normandy, France.

 Ermentrude De Ferrers
Ermentrude was born in 1145.