He married, 1stly, Agnes, sister of Alice, COUNTESS OF LINCOLN, daughter of MANFRED III, MARQUESS OF SALUZZO. She died s.p. shortly after the battle of Evesham (4 August 1265] it is said of grief for her husband's imprisonment, and was buried, as was her said sister, at the Black Friars, Pontefract. [Complete Peerage XII/2:278-80, (transcribed by Dave Utzinger)]