William de Percy II

WILLIAM de PERCY II (d.1175), son of Alan de Percy; father of the heiress Agnes (our line). Direct ancestor. ||27 Oct 2026 - WIFE WIRED (✓)|| Alice (Adelisa) de Tonbridge, 1st wife (d. before 1166), mother of Alan, Maud Countess of Warwick and Agnes; he m. 2ndly 1165/66 Sibyl de Valognes, widow of Robert de Ros (Medieval Lands, PERCY). Source: Medieval Lands (Charles Cawley, fmg.ac), read in the browser 27 Oct 2026, 'English Lords P-S' - PERCY, citing the Whitby and Sawley charters and the Pipe Rolls 1165/66 and 1169/70. ||27 Oct 2026 - CP X READ|| 'William de Percy, s. and h.' of Alan by Emma de Gant; confirmed by Stephen Feb 1136 in the Whitby gifts 'made by him, his father, and his grandfather'; at the battle of the Standard 1138; carta of 1166: 28 fees of old feoffment; had an inheritance in Normandy (fine of 1218); 'He was the founder of Sallay Abbey, 6 Jan. 1147/8'; benefactor of Byland, Fountains, Markby and Sixle; gave Topcliffe church to St Peter's, York; m. 1stly before 1136 Alice de Tonbridge, 2ndly c.1166 Sibyl de Valognes; 'd. s.p.m.s., before Easter 1175', bur. Fountains; his inheritance partitioned at Easter 1175 between the husbands of Maud (Countess of Warwick) and Agnes (CP X pp.440-444). Mother wired today. Source: Complete Peerage 2nd ed. vol. X (1945), 'Percy' pp.435-447 and notes (page images supplied by Aynsley, read 27 Oct 2026).