General Notes

William de Ferrers, buried 31 Mar 1254, Earl of Derby.  [Magna Charta Sureties, line 88-3]

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William de Ferrers, 7th Earl of Derby, upon doing homage in the 32nd Henry III [c. 1248], had livery of Chartley Castle and the other lands of his mother's inheritance; and the same year he sat in the parliament held in London wherein the king made so stout an answer to the demands of his impetuous barons. His lordship m. 1st, Sibel, one of the daus. and co-heirs of William Mareschal, Earl of Pembroke, by whom he had seven daus., viz., Agnes, m. to William de Vesci; Isabel m. 1st to Gilbert Basset, of Wycombe, and 2ndly, to Reginald de Mohun; Maud, m. 1st to William de Kymes; 2ndly to William de Vyvon, and 3rdly, to Emerick de Rupel Carnardi; Sibil m. 1st to John de Vipont, 2ndly to Franco de Mohun; Joane m. to William Aguillon, and 2ndly to John de Mohun; Agatha m. to Hugh Mortimer of Chelmersh; Eleanor m. 1st to William de Vallibus, 2ndly to Roger de Quincy, Earl of Winton, and 3rdly to Roger de Leybourne, but had no issue. The earl m. 2ndly Margaret, one of the daus. and co-heirs of Roger de Quincy, Earl of Winchester, and had issue: Robert, his successor; William, upon whom his mother conferred the lordship of Groby, co. Leicester; Joan, m. Thomas, Lord Berkeley; and Agnes, m. to Robert de Muscegros, Lord of Deerhurst.

His lordship, who from his youth had been a martyr to the gout, and in consequence obliged to he drawn from place to place in a chariot, lost his life by being thrown through the heedlessness of his driver over the bridge at St. Neots, co. Huntingdon, in 1254. He was survived by his eldest son, Robert de Ferrers, 6th Earl of Derby. [Sir Bernard Burke, Dormant, Abeyant, Forfeited, and Extinct Peerages, Burke's Peerage, Ltd., London, 1883, p. 197, Ferrers, Earls of Derby]