John Thomas Mullock (September 27, 1807 – March 26, 1869) was Roman Catholic bishop of St. John's, Newfoundland and did much to establish and develop the church in the region. Born in Limerick, Ireland, he died in St. John's and is buried in the crypt of the Basilica of St. John the Baptist. Early life Born in Limerick in 1807, Mullock was admitted as a Friar Minor in 1825, and then sent to be educated at St. Bonaventure's College in Seville. He went on to complete his seminary studies at St. Isidore's College in Rome, where, in 1829, he was ordained a Catholic priest. After long service in Ireland — at Ennis, Cork, and Dublin — he was appointed in 1847, coadjutor bishop with right of succession to his fellow friar, Michael Anthony Fleming, O.S.F., Catholic Bishop of St. John's, Newfoundland, for which office he was consecrated by Cardinal Fransoni on 27 December 1847, at St. Isidore's. As Bishop In July, 1850, Mullock succeeded Fleming. The Catholic Church made great progress in Newfoundland during his episcopate of Mullock, a new diocese, Harbour Grace, being erected. The cathedral of St. John's, begun in 1841, was consecrated on 9 September 1855. He also opened in 1857 St Bonaventure's, a school for middle-class boys, a new episcopal palace and library, eleven convents, and numerous churches. Mullock took a keen interest in the commercial development of Newfoundland, and was enthusiastic about its natural resources. He was frequently consulted by the Governor on matters relating to the welfare of the country, and many of his suggestions relating to the fisheries and other matters were adopted. Before leaving Ireland he was a frequent contributor to the periodical literature of the day, and took an active part in the Irish literary movement of the 1840s. Long before the first attempts to lay a submarine cable across the Atlantic was made (1857), Mullock had on several occasions publicly propounded the feasibility of connecting Europe with North America by means of submarine telegraph. A good linguist in Spanish, French, and Italian, he was the first to bring before the English-speaking world the life and works of the Redemptorist founder and theologian, Alphonsus Maria de' Liguori, publishing his Life at Dublin in 1846, and in the following year a translation of the saint's History of Heresies and their Refutation. In 1847, appeared at Dublin his Short History of the Irish