Succession, including the names of ancient Celtic leaders, medieval, and post-reformation alike.
| Term
| Incumbent
| Notes
|
| 445 to 455
| Bishop Padraic
(Patricius)
| Resigned; Saint Patrick |
| 455 to 467
| Bishop Benignus |
| 467 to 481
| Bishop Jarlath |
| 481 to 497
| Bishop Cormac |
| 497 to 513
| Bishop Dubhtach I |
| 513 to 526
| Bishop Ailid I |
| 526 to 536
| Bishop Ailid II |
| 536 to 548
| Bishop Dubhtach II |
| 548 to 551
| Bishop David |
| 551 to 578
| Bishop Feidlimid |
| 578 to 588
| Bishop Cairlan |
| 588 to 598
| Bishop Eochaid |
| 598 to 610
| Bishop Senach |
| 610 to 623
| Bishop Mac Laisre |
| 623 to 661
| Bishop Tommine |
| 661 to 688
| Bishop Seghene |
| 688 to 715
| Bishop Flann-Febla |
| 715 to 730
| Bishop Suibhne |
| 730 to 750
| Bishop Congus |
| 750 to 758
| Bishop Cele-Peter |
| 758 to 768
| Bishop Ferdachry |
| 768 to 778
| Bishop Cu-dinisc
| Deposed |
| 778 to 793
| Bishop Dubhdalethe I |
| 793 to 793
| Bishop Faindelach
| Deposed |
| 793 to 793
| Bishop Airechtach
| Deposed |
| 793 to 795
| Bishop Faindelach
| Restored |
| 795 to 807
| Bishop Connmach |
| 807 to 808
| Bishop Torbach |
| 808 to 812
| Bishop Nuada |
| 812 to 823
| Bishop Flanngus
| Resigned |
| 823 to 833
| Bishop Artri |
| 833 to 834
| Bishop Eoghan |
| 834 to 852
| Bishop Forannan |
| 834 to 852
| Bishop Dermot O'Tighernan
| In opposition |
| 852 to 874
| Bishop Fethgna |
| 874 to 877
| Bishop Maelcobha
| Deposed |
| 877 to 879
| Bishop Ainmeri |
| 879 to 883
| Bishop Cathasach I |
| 883 to 888
| Bishop Maelcobha
| Restored |
| 888 to 927
| Bishop Maelbrighte |
| 927 to 936
| Bishop Joseph |
| 936 to 936
| Bishop Mael-Patrick |
| 936 to 957
| Bishop Cathasach II |
| 957 to 965
| Bishop Muiredach
| Deposed |
| 965 to 998
| Bishop Dubhdalethe II |
| 998 to 1001
| Bishop Muirecan
| Deposed |
| 1001 to 1020
| Bishop Maelmuire |
| 1020 to 1049
| Bishop Amalgaid |
| 1049 to 1064
| Bishop Dubhdalethe III |
| 1060 to 1064
| Bishop Cumuscach
| In opposition |
| 1064 to 1091
| Bishop Mael-Isu |
| 1091 to 1105
| Bishop Domnald |
| 1105 to 1129
| Bishop Cellach |
| 1129 to 1134
| Bishop Murrough |
| 1134 to 1137
| Bishop Malachy
| Resigned |
| 1137 to 1174
| Bishop Gelasius |
| 1174 to 1175
| Bishop Cornelius MacConcaille |
| 1175 to 1180
| Bishop Gilbert O'Caran |
| 1181 to 1201
| Bishop Thomas O'Connor |
| 1184 to 1186
| Bishop Maelisu O'Carroll In opposition |
| 1186 to 1206
| vacant |
| 1206 to 1216
| Bishop Eugene MacGillaweer |
| 1217 to 1227
| Bishop Luke Netterville |
| 1227 to 1237
| Bishop Donat O'Feery |
| 1237 to 1240
| vacant |
| 1240 to 1247
| Bishop Albert Suerbeer, OP
| Resigned |
| 1247 to 1256
| Bishop Reginald |
| 1257 to 1260
| Bishop Abraham O'Connellan |
| 1261 to 1270
| Bishop Patrick O'Scanlan, OP |
| 1270 to 1272
| vacant |
| 1272 to 1303
| Bishop Nicholas MacMaelisu |
| 1303 to 1306
| vacant |
| 1306 to 1306
| Bishop John Taaffe |
| 1307 to 1311
| Bishop Walter Joyce, OP
| Resigned |
| 1311 to 1323
| Bishop Roland Joyce, OP
| Resigned |
| 1323 to 1333
| Bishop Stephen Seagrave |
| 1334 to 1346
| Bishop David Mageraghty |
| 1346 to 1348
| Bishop Richard FitzRalph |
| 1348 to 1360
| Archbishop Richard FitzRalph, Archbishop of Armagh |
| 1360 to 1362
| vacant |
| 1362 to 1380
| Archbishop Milo Sweteman, Archbishop of Armagh |
| 1380 to 1383
| vacant |
| 1383 to 1404
| Archbishop John Colton, Archbishop of Armagh |
| 1404 to 1416
| Archbishop Nicholas Fleming, Archbishop of Armagh |
| 1416 to 1418
| vacant |
| 1418 to 1439
| Archbishop John Swayne
| Resigned |
| 1439 to 1443
| Archbishop John Prene |
| 1444 to 1456
| Archbishop John Mey |
| 1457 to 1470
| Archbishop John Bole |
| 1471 to 1475
| Archbishop John Foxall, OFM |
| 1475/6 to 1475/6
| Archbishop Edmund Conisburgh
| Resigned |
| 1475/6 to 1478
| vacant |
| 1478 to 1513
| Archbishop Octavian De Spinellis |
| 1513 to 1521
| Archbishop John Kite
| Resigned |
| 1521 to 1538
| Archbishop George Cromer
| Pre-Reformation |
| Henry VIII's break with Rome |
| 1539 to 1543
| Archbishop George Cromer
| Post-reformation; no longer recognized by Rome |
| 1543 to 1552
| Archbishop George Dowdall
| Resigned (restored in 1553) |
| 1553 to 1553
| Archbishop Hugh Goodacre |
| 1553 to 1563
| Archbishop George Dowdall
| Reunited with Roman Catholic establishment |
| 1563 to 1567
| Archbishop Adam Loftus |
| 1568 to 1584
| Archbishop Thomas Lancaster |
| 1584 to 1589
| Archbishop John Long |
| 1590 to 1594/5
| Archbishop John Garvey |
| 1595 to 1613
| Archbishop Henry Ussher |
| 1613 to 1624/5
| Archbishop Christopher Hampton |
| 1625 to 1656
| Archbishop James Ussher |
| 1656 to 1661
| vacant |
| 1661 to 1663
| Archbishop John Bramhall |
| 1663 to 1678
| Archbishop James Margetson |
| 1678 to 1702
| Archbishop Michael Boyle |
| 1703 to 1713
| Archbishop Narcissus Marsh |
| 1714 to 1724
| Archbishop Thomas Lindsay |
| 1724 to 1742
| Archbishop Hugh Boulter |
| 1742 to 1746
| Archbishop John Hoadly |
| 1747 to 1764
| Archbishop George Stone |
| 1765 to 1794
| Archbishop Richard Robinson, Baron Rokeby |
| 1795 to 1800
| Archbishop William Newcome |
| 1800 to 1822
| Archbishop Hon. William Stuart |
| 1822 to 1862
| Archbishop Lord John George Beresford |
| 1862 to 1885
| Archbishop Marcus Gervais Beresford |
| 1886 to 1895
| Archbishop Robert Knox |
| 1893 to 1896
| Archbishop Robert Samuel Gregg |
| 1896 to 1911
| Archbishop William Alexander |
| 1911 to 1920
| Archbishop John Baptist Crozier |
| 1920 to 1938
| Archbishop Charles Frederick D'Arcy |
| 1938 to 1938
| Archbishop Charles Godfrey Fitzmaurice Day |
| 1939 to 1959
| Archbishop John Allen Fitzgerald Gregg |
| 1959 to 1969
| Archbishop James McCann |
| 1969 to 1980
| Archbishop George Otto Simms |
| 1980 to 1986
| Archbishop John Ward Armstrong |
| 1986 to 2006
| Archbishop Robin Eames |
| 2007 to present
| Archbishop Alan Harper |
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