William Ii 4th Earl Derby Deferrers
William Ii 4th Earl Derby was born in 1162 in Ferrers, Derbyshire, , England.¹   He died at the age of 85 on September 22nd, 1247 in , , , England.¹ 

 Margaret De Quincey
Margaret was born in 1208 in , Lincolnshire, , England.¹   She died at the age of 57 on March 6th, 1265 in Clerkenwell, Middlesex, , England.  She was buried in Clerkenwell, Middlesex, England.^2 3 

 + William De Ferrers
+ William was born in 1240 in Groby, Leicestershire, England.¹   He died at the age of 47 on December 20th, 1287 in Groby, Leicestershire, England.¹