The first bishop of Dromore whom we find commemorated in the sixteenth century is _Galeatius_, whose death is registered in 1504. Of his successor, John Baptist, we only know that he was appointed on June 12th, the same year. _Thaddeus_, a Franciscan friar, was next advanced to the see on 30th April, 1511. He is commemorated in Archbishop Cromer's register, as still ruling the see in 1518, and we find no other bishop mentioned till the appointment of _Quintinus Cogleus_ (_i.e._ Con MacCoughlin), of the order of St. Dominick, in the year 1536 (_Hib. Dom._, p. 486). This bishop, however, seems to have held the see only for a short time, for in the Consistorial Acts we soon after find the following entry:--"An. 1539. Sua Sanctitas providit Ecclesiae Dromorensi in Hibernia _de persona_ Rogerii". Ten years later Arthur Magennis was chosen by Pope Paul III. to govern the diocese of St. Colman. On the 10th of May, 1550, he surrendered his bulls to the crown, and had in return "a pardon under the great seal for having received the Pope's bull, and for other misdemeanours". (Reeves' _Eccles. Antiq._, p. 308. V. Morrin, _Pat. Rolls_, i. p. 205). Nevertheless, there can be but little doubt as to the orthodoxy of this prelate. Even Cox (i. 288) attests his devotion to the Catholic cause. He, moreover, specially names him as an instance of a _Catholic bishop_, and adduces the fact of his being allowed by the crown to hold peaceable possession of his see as a proof that "the Reformation made but small progress in Ireland" at this period. In 1551 he gave a public proof of his devotedness to the Catholic faith. Edward VI., in the beginning of February, sent an order to the viceroy, Sir Anthony St. Leger, commanding the use of the English liturgy in all the churches of Ireland. On the 1st of March the same year this order was communicated to the archbishops and bishops assembled in council for that special purpose; but no sooner had St. Leger made his discourse, commending the royal prerogative, and extolling the liturgy now proposed to the Irish clergy, than Dr. Dowdall of Armagh opposed it with all his zeal, and denounced the measure as anathematized "by the Church of St. Peter, the Mother Church of Rome". It must ever remain a special glory of the province of Armagh, that, as Cox informs us (p. 290), one only of the suffragan bishops of the primatial see--viz., Dr. Staples, who held from the crown the revenues of Meath--could be found to support the proposal of the government, whilst all the others adopted the sentiments of Dr. Dowdall. The year of Dr. Magennis's death is uncertain; he seems, however, to have survived some years the accession of Queen Elizabeth, and on his death the see of Dromore became canonically united with Ardagh.