Name Suffix: [1St Earl Derby] Robert de Ferrers, having contributed, at the head of the Derbyshire men, to King Stephen's victory over King David of Scotland at Northallerton (commonly called the battle of the Standard), was created by that monarch Earl of Derby. By Hawise his wife, he had William who d. s. p.; Robert his successor; Walcheline, of Okeham; Isolda, m. to Stephen de Beauchamp; and Maud, m. to Bertram de Verdon. The earl d. in 1139 and was s. by his son, Robert de Ferrers, as 2nd Earl of Derby. [Sir Bernard Burke, Dormant, Abeyant, Forfeited, and Extinct Peerages, Burke's Peerage, Ltd., London, 1883, p. 196, Verdon, Earls of Derby]