Mortimer O'Sullivan
O'Sullivan, Mortimer, D.D., a theological writer, and champion of the Irish Church, was born towards the end of the 18th century. In 1813 he took a scholarship in Trinity College, Dublin. He was the author of numerous works, the principal of which were: Captain Rock Detected (1824), Guide to an Irish Gentleman in Search of a Religion (1833), Case of the Protestants in Ireland Stated (1836), Theory of Development in Christian Doctrine (1846), Remains of Samuel O'Sullivan, D.D. (1851).
Dr. O'Sullivan was rector of Killyman until 1849, when he was collated to the prebend of Ballymore. He was the first Head Master of the Royal School of Dungannon. He died 30th April 1859, and was buried at Chapelizod, near Dublin.
Sources
16. Authors, Dictionary of British and American: S. Austin Allibone. 3 vols. Philadelphia, 1859-'71.
118. Ecclesiae Hiberniae Fasti: Rev. Henry Cotton: Indices by John R. Garstin, M.A. 5 vols. Dublin, 1851-'60.