William de Warenne
d. 1286
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William de Warenne (1256-1286), son and heir apparent of the 6th Earl of Surrey, killed in a tournament at Croydon on 15 December 1286 - six months before his daughter Alice was born; he never saw her, and he never wore the earldom.
Research notes
✓ DOCUMENTED (Wikipedia 'Alice de Warenne, Countess of Arundel'; standard CP account; web-confirmed 24 Aug 2026): m. Joan de Vere; father of Alice (I100635) and of John, 7th and last Warenne Earl of Surrey (collateral). Added 24 Aug 2026. ||CP CITATION 24 Aug 2026|| CP1 SURREY p.328 confirms the marriage verbatim: 'm. in or before 1283, Joan, da. of Robert (de Vere), EARL OF OXFORD... killed at a tournament at Croydon' - CP1 dates the tournament 15 Dec 1285 (making the 7th Earl posthumous, b. 29 June 1286); modern accounts give 1286; the variance noted, 1286 retained.