_John O’Hadian_, who is styled _Hedayn_ in the Consistorial Acts, received from the Holy See the Archdeaconries of Cashel and Ossory on the 8th of January 1459/60 (_Monument. Vatic._, pag. 424), and on the 15th January, 1479, was proclaimed in consistory Bishop of Ossory. It is added in the record of his appointment that, “die 21 Februarii sequentis consecratus fuit in ecclesia S. Tryphonis de Urbe a Benedicto Archiepo. Mitilenensi, assistentibus sibi Stephano Archiepo. Antibarensi et Stephano Sagiensi Epo”. He was appointed collector of the Apostolic taxes in Ireland in 1482, and his death is recorded on 6th of January, 1486/7. _Oliver Cantwell_, who, in various entries of the Vatican archives, receives the names _Cantnel_ and _Wertell_, was advanced to the episcopate in consistory of the 26th March, 1487, the see being described as vacant _per obitum Joannis extra curiam_. This illustrious bishop belonged to the order of St. Dominick, and De Burgo, in _Hib. Dominic._, pag. 478, gives a letter of Innocent VIII., dated 27th March, 1487, authorizing him to be consecrated by any bishop holding communion with the Holy See. The first years of his episcopate were disturbed by the rebellion of Lambert Simnel and its accompanying disorders, and we find published by Rymer a letter of the above-named Pontiff, Innocent VIII., exhorting the Bishop of Ossory and the other Prelates of the Irish Church to use their influence in quelling the rebellious excitement which prevailed throughout our island. Dr. Cantwell governed the diocese for almost forty years, and in a very advanced age he passed to his eternal crown on the 9th of January, 1526/7.