A controversial movement to put Scotland's church under the authority of Rome was inaugurated by Malcolm III's wife, Queen Margaret and carried through by her sons Alexander I and David I. Gradually the whole position passed into the hands of Thurgot and his successors in the bishopric. Canons Regular were instituted and some of the Culdees joined the Roman Catholic church. Those who declined were allowed a life-rent of their revenues and lingered on as a separate but ever-dwindling body till the beginning of the 14th century when excluded from voting at the election of the bishop, they disappear from history. In the same fashion the Culdee of Monymusk, originally perhaps a colony from St Andrews, became Canons Regular of the Augustinian order early in the 13th century, and those of Abernethy in 1273. At Brechin, famous like Abernethy for its round tower, the Culdee prior and his monks helped to form the chapter of the diocese founded by David I in 1145, though the name persisted for a generation or two.