The family of Belgrave, which included among its members Roger de Belgrave†, knight of the shire in 1327 and 1338, and Roger†, the mayor and parliamentary burgess of Leicester (respectively William’s grandfather and uncle), took its name from a township just to the north of Leicester, where it had been settled since the time of Henry II. Although William’s cousin, John Belgrave (d.1387), was the principal heir to the family lands (as well as to more at East Haddon in Northamptonshire), in 1375 he agreed that part of the estate at Belgrave should pertain to William’s father and in due course (probably in 1412) this passed along with property at North Kilworth to William himself.
It is not certain whether it was this William Belgrave or his son of the same name who, by the spring of 1424, had apparently inherited the interest of Elizabeth, recently deceased widow of Thomas Mandeville, in the former Shulton estates at Countesthorpe and elsewhere in Leicestershire, and then joined the other Shulton coheirs in continuing their lawsuits with the abbey of St. Mary de Pré over title to the advowson of Blaby. In either case, the precise relationship between the Belgraves and Elizabeth Mandeville remains obscured.
