William de Ferrers , Earl of Derby 5th
William was born in 1200 in Derbyshire, England.  He died in Evington, Leicestershire, England.

 Margaret Quincy Countess of Lincoln
Margaret was born in 1208 in Lincoln,Lincolnshire,England and her baptism took place in 1208.  She died at the age of 50 in 1258 in Clerkenwell,Middlesex,England.  She was buried in Hospitallers,Clerkenwell,Middlesex,England.

 Joan de Ferrers , Baroness Berkeley
Joan was born in 1236 in Stourton, Wiltshire, England.  She died in Berkeley Castle, Berkeley, Gloucestershire, England.

 Robert de Ferrers , Earl of Derby 6th
Robert was born about 1239.  He died in 1279.

 William de Ferrers , Sir
William was born in 1240.  He died before December 20th, 1287.