Thomas Alphonsus O’Callaghan (9 May 1839 – 14 June 1916) was an Irish Roman Catholic bishop who was born and died in Cork.[1]
O'Callaghan was educated at Minerva College, Rome and ordained a Dominican priest in 1863. He received the degree of Doctor of Divinity (DD). He became Prior of St Clement's, Rome in 1881.[2] William Delany, Bishop of Cork preferred successor was the Dean of Cork, Henry Neville but he was viewed unfavourably by Thomas Croke, the Archbishop of Cashel and O'Callaghan was selected.[3] He was consecrated coadjutor bishop of Cork in 1884 before succeeding in 1886. He died in post in 1916.[4]