The cathedral is, since 1810, a mensal parish, with the
Bishop of Waterford and Lismore as parish priest, and an administrator appointed as priest in charge. Pastors of the ‘Big Chapel’ • Rev, Paul Bellew, V.G, in exile, but Parish Priest c.1704–1732 • Rev. William O'Meara, V.G, 1728–43 • Rev. William Browne, 1743–47 • Rev. Patrick Fitzgerald, 1747–67 • Rev. William Francis Galwey, 1767–72 The new cathedral dean • Rev. Dr. Thomas Hearn, 1772–1810 On Dean Hearn's death Holy Trinity became a mensal parish, with administrators as follow: • Rev. Garrett Connolly, 1810–17 • Rev. Thomas Murphy, 1817–18 • Rev. Eugene Condon, 1818–28 • Rev. Thomas Dixon, 1828–43 • Rev. Richard Fitzgerald 1843–62 • Rev. Thomas English, 1862–67 • Rev. Edward P. Walsh, 1867–69 • Rev. Patrick Ryan, D.D., 1869–83 • Rev. Robert Power, 1883–86 • Rev. Patrick J. Sheehan 1886–91 • Rev. William O'Donnell, 1891–1902 • Rev. Thomas F. Furlong, 1902–12 • Rev. William O'Connell, 1912–24 • Rev. John McCarthy, 1924–35 • Rev. John Warren, 1935–36 • Rev. John O’Connor, 1936–46 • Rev. William Cahill, 1946–51 • Rev. Richard Coady, 1951–68 • Rev. William Hallanan, 1968–72 • Rev. Charles Lawn, 1972–73 • Rev. Francis Hopkins, 1973–79 • Rev. Thomas Nugent, 1979–85 • Rev Nicholas O’Mahony, 1985–1995 • Rev William Ryan, 1995–2001 • Rev Joseph Condon, 2001–2007 • Rev Gerard Langford, 2007–2012 • Rev Paul Waldron, 2012–2016 • Rev Edmond Cullinan, 2016–2021 • Rev John Harris, 2021–present ==Cathedral organ==