The Nuttall Encyclopedia 
The name of nine Popes;
ope from 253 to 257, signalised by his zeal against the heresies of his time;
ope from 752 to 757, in whose reign, under favour of Pepin le Bref, began the temporal power of the Popes;
ope from 768 to 772, sanctioned the worship of saints and images;
ope from 816 to 817;
ope from 885 to 891, distinguished for his charity;
ope from 896 to 897, strangled after a reign of 18 months;
ope from 829 to 831, entirely under the control of his mistresses;
ope from 939 to 942;
ope from 1057 to 1058, vigorously opposed the sale of benefices and the immorality of the clergy.
Cyclopedia of Biblical, Theological and Ecclesiastical Literature 
a Scotch prelate, was bishop of the Isles in 1253, and in the same year confirmed to the monastery of Paisley all the churches and lands they held within his diocese. See Keith, Scottish Bishops, page 300.