List of the bishops of Down
The following people were bishops from Down until 1441, from Down and Connor since 1441 .
- Fergus 584
- 825
- Graithene 956
- Finghin 964
- London 1043
- MaelKevin 1086
- 1117 Mael Muire
- 1123 Oengus and others Gormain
- ?
- approx. 1124 Mael Maedóc Ó Morgair [Malachias I.]
- 1152–1175 Mael Isu mac in Chleirig Chuirr [Malachias II.]
- 1175 Gilla Domangairt Mac Cormaic [Gelasius or Gilladomail McCormic]
- 1175 Amláin
- approx. 1176–1202 Echmilid [Echmílid mac Máel Martain or Malachias III.]
- approx. 1202 – approx. 1212 Radulfus, O.Cist.
- 1224-1242 Thomas
- 1251-1257 Randulphus
- 1258–1265 Reginaldus (afterwards Bishop of Cloyne)
- 1265–1277 Thomas Lydel [Liddel]
- 1277-1305 Nicholas le Blund, OSB
- 1305–1314 Thomas Ketel
- 1314-1327 Thomas Bright, OSB
- 1328 John of Baliconingham (also Bishop of Cork)
- 1329-1353 Ralph von Kilmessan
- 1353-1354 Gregor
- 1353–1365 Richard Calf I.
- 1365-1366 Robert von Aketon (then Bishop of Kildare)
- 1367-1368 William White, OSA
- 1369-1386 Richard Calf II., OSB
- 1386-1394 John Ross, OSB
- 1394–1413 John Dongan (previously Bishop of Derry and Mann)
- 1413–1442 John Cely [or Sely]
- 1445 Ralph Alderle, OSA
- Diocese is united with the Diocese of Connor
- 1441-1450 John Fossard
- 1447-1451 Thomas Pollard, O. Carth.
- 1451-1453 Richard Wolsey, OP
- Thomas Knight, OSB (1453-1463)
- Tadhg Ó Muirgheasa [Thaddaeus] (1469–1480)
- Tiberio Ugolino (1483-1519)
- Robert Blyth, OSB (1520-1539)
- Eugene Magennis (1539–1563)
- Miler McGrath , OFM (1565–1580, relieved of office) (from 1571 also Anglican Archbishop of Cashel)
- Donat Gallagher, OFM (1580–1581) (previously Bishop of Killala)
- Blessed Conor O'Devany, OFM (1582-1612)
- Patrick Hanratty (1614–1625) (Vicar Apostolic)
- Edmund Dungan (1626-1629)
- Bonaventure Hugh Magennis, OFM (1630-1640)
- Heber MacMahon (1642–1643) (afterwards Bishop of Clogher)
- Arthur Magennis, O.Cist. (1647-1653)
- Michael O'Beirn (1657–1670) (Vicar Apostolic)
- Daniel Mackey (1671–1673)
-
Sedis vacancy (1673-1711)
- Terence O'Donnelly (1711 –...) (Vicar Apostolic)
- James O'Shiel, OFM (1717-1724)
- John Armstrong (1727-1739)
- Francis Stuart, OFM (1740-1750)
- Edmund O'Doran (1751-1760)
- Theophilus McCartan (1760–1778)
- Hugh McMullan (1779–1794)
- Patrick MacMullan (1794-1824)
- William Crolly (1825–1835) (later Archbishop of Armagh)
- Cornelius Denvir (1835-1865)
- Patrick Dorrian (1865-1885)
- Patrick MacAlister (1886–1895)
- Henry Henry (1895-1908)
- John Tohill (1908-1915)
- Joseph MacRory (1915–1928) (later Archbishop of Armagh)
- Daniel Mageean (1929–1962)
- William J. Philbin (1962-1982)
- Cahal Daly (1982–1990) (later Archbishop of Armagh)
- Patrick Walsh (1991-2008)
- Noel Treanor (since 2008)