 He also received a major grant of estates, including the third part of the crown's share of the Kendal barony, and Burgh, Pendragon, and Appleby Castles.He did not, however, receive the lordship of Kendal itself, and it would be Parr's son who would be the first of the family raised to the peerage, in 1538.Sir William Parr swore to recognize Edward, Prince of Wales, as heir to the throne in 1472, and was exempted from the Resumption Act of 1473 

Parr sat as knight of the shire for Westmoreland in 1467 and 1473, was High Sheriff of Cumberland for 1473 and invested Knight of the Garter in 1474.