William de Ferrers, 3rd Earl of Derby

English Earl (1200–1190)

Parents

• Margaret Ferrers, Countess of Derby
• Robert de Ferrers, 2nd Earl of Derby

Children

• Walkelin de Derby
• Millicent de Ferrers
• Walcheline de Ferrers, Lord of Egginton
• Petronell de Ferrers
• Agatha de Ferrers
• William de Ferrers, 4th Earl of Derby

Siblings

• Walkelin de Derby

Partners

• Sibyl de Braose