 In 1275 Bohun married Maud de Fiennes , daughter of Enguerrand de Fiennes , chevalier , seigneur of Fiennes , by his 2nd wife , Isabel ( kinswoman of Queen Eleanor of Provence ) . She predeceased him , and was buried at Walden Priory in Essex . Hereford himself died at Pleshey Castle on 31 December 1298 , and was buried at Walden alongside his wife . They had one son Humphrey de Bohun , 4th Earl of Hereford , born around 1276 . The son was given possession of his father 's lands and titles on 16 February 1299 . The young Humphrey also inherited his father 's title of Constable of England . 
