William de Cantilupe (died 1254)
William de Cantilupe (died 25 September 1254) (anciently Cantelow, Cantelou, Canteloupe, etc, Latinised to de Cantilupo)  was jure uxoris Lord of Abergavenny, in right of his wife Eva de Braose, heiress of the de Braose dynasty of Welsh Marcher Lords. His chief residences were at Calne in Wiltshire and Aston Cantlow (named after his family), in Warwickshire, until he inherited Abergavenny Castle and the other estates of that lordship.
At some time before 15 February 1248 he married Eva de Braose, daughter and heiress of William de Braose (died 1230) by his wife Eva Marshal, daughter of William Marshall, 1st Earl of Pembroke. By his wife he had children including:
- George de Cantilupe (died 1273), Lord of Abergavenny, only son and heir, who died childless, leaving his sisters or their issue as his co-heiresses.
- Milicent de Cantilupe (died 1299), who married twice, firstly to Eudo la Zouche and secondly to John de Montalt
- Joan de Cantilupe (died 1271), who married Henry de Hastings (c. 1235 – 1269).
- Cleveland, Duchess of (1889), The Battle Abbey Roll, I, London: John Murray
- Cokayne, G. E. (1912), Gibbs, V., ed., The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, II (new, 13 volumes in 14 (1910–1959) ed.), London: The St. Catherine Press Ltd.
- Calendar of Inquisitions Post Mortem. III. London: HMSO. 1912.
- Nichols, John (1795). The History and Antiquities of the County of Leicester. II pt.II. Leicester: John Nichols.
- Kingsford, C.L. (2004), ‘Hastings, Sir Henry (1235?–1269)’, rev. H. W. Ridgeway, Oxford Dictionary of National Biography, Oxford University Press, retrieved 26 November 2012(subscription or UK public library membership required)
- Stacey, Robert C. (2004), ‘Cantilupe, William (III) de (d. 1254)’, Oxford Dictionary of National Biography, Oxford University Press, retrieved 28 November 2012(subscription or UK public library membership required)
- Braose Family Web
- Sir Bernard Burke C.B., LL.D., Ulster King of Arms (compiler). (1996). A Genealogical History of the Dormant, Abeyant, Forfeited and Extinct Peerages of the British Empire. Baltimore:: Genealogical Publishing Co, pg. 101.
- Frederick Lewis Weis (with additions and corrections by Walter Lee Sheppard, Jr. and assisted by David Faris). (1992). Ancestral Roots of Certain American Colonists Who Came to America before 1700. Baltimore: Genealogical Publishing Co, Line 66.29. Lines: 39-29, 39A-29, 93A-28, 232A-32