The monastery lands continued to belong to the bishopric until the Revolution of 1688, at which date that see was the richest in the kingdom next to St. Andrews and Glasgow. The priory church, which served also as the cathedral of the diocese, had a long nave without aisles, a choir of about the same length, and a lady chapel beyond. Thomas Sydserf, Bishop of Galloway 1635–8, undertook an ambitious remodelling of the nave.