In 1200 William Cantilupe Baron (age 41) was appointed High Sheriff of Worcestershire.

In 1204 William Cantilupe Baron (age 45) was granted the manor of Eaton, Bedfordshire.

In 1204 William Cantilupe Baron (age 45) was granted the manor of Aston Cantlow, Warwickshire.

In 1207 William Cantilupe Baron (age 48) was appointed Baron of the Exchequer.

In 1207 William Cantilupe Baron (age 48) was appointed High Sheriff of Worcestershire.

In 1209 William Cantilupe Baron (age 50) was appointed High Sheriff of Warwickshire and High Sheriff of Leicestershire after which his main residence was Kenilworth Castle [Map].

Chronica Majora. 30 Aug 1236. The venerable bishops of Worcester and Norwich, of pious memory, having gone the way of all flesh, the monks of Worcester elected [his son] Master Walter de Cantelupe (age 45), son of the powerful and illustrious William de Cantelupe (age 77), to be their prelate and the pastor of their souls, and the pope accepted of him "without any difficulty, and consecrated him as bishop. The Norwich monks elected their prior, a religious and discreet man, to be their head; but his election, although duly made, displeased the king, and, owing to the ridiculous reasonings and objections of some who opposed it, was for a long time hung in suspense, not without certain scmples arising from suspected misdeeds.