From the time Christianity first arrived in Ireland in the first half of the 5th century (in the form of Palladius's mission), the early church was centred around monastic settlements. Patrick founded such a settlement in an area known as Corcoghlan, now known as Elphin, in 434 or 435. Following the Synod of Rathbreasail in the year 1111, the Diocese of Elphin was formally established.[1][2]
Resigned before 1152 and died at Cong Abbey in 1168. He was remembered as a great scholar (ecnaid) and historian (senchaid). A genealogical section for the Síl Muiredaig in the Book of Ballymote (Minigud sencasa Síl Muiredaig) is attributed to him.[7]
Formerly Abbot of Boyle. Became bishop c. 1180. Died in office.
1206
1215
Ardgar Ua Conchobair
Became bishop before 14 February 1206. Died in office.
fl. 1217/21
1229
Dionysius Ó Mórda
Known to be bishop around 1217 and 1221. Resigned in 1229 and died 15 December 1231.
c. 1230
Alanus
Archdeacon of Mayo. Became bishop c. 1230, but probably did not get possession of the see.
1231
1244
Donnchad mac Fíngein Ó Conchobhair
Also known as Dionysius and Donatus. Consecrated in 1231. Died in office on 24 April 1244.
1245
1246
Eóin Ó Mugróin
Also known as John O'Hugrain. Formerly Archdeacon of Elphin. Elected after 12 June 1244, appointed on 2 July 1245, and consecrated in the same year. Died in office in 1246.
1247
1259
Tomaltach mac Toirrdelbaig Ó Conchobhair
Also known as Thomas. Formerly Dean of Annaghdown. Elected before 21 August 1246 and consecrated on 21 January 1247. Translated to Tuam 23 March 1259.
1260
1262
Máel Sechlainn Ó Conchobair
Also known as Milo O'Connor. Formerly Archdeacon of Clonmacnoise. Elected before 30 January 1260 by the majority of the Chapter of Elphin, received possession of the temporalities on 8 November 1260, and consecrated c. November 1260. He was opposed by Tomas mac Fergail Mac Diarmata. Died in office on 9 January 1262.
1262
1265
Tomas mac Fergail Mac Diarmata, O.Cist.
Also known as Thomas Mac Ferrall McDermott. Elected before 26 January 1260 by the Dean of Elphin and others of the Chapter, but was not able to take possession of the see. He successfully appealed to the pope, but did not take possession of the temporalities until after the death of Bishop Máel Sechlainn Ó Conchobair in 1262. Died in office in 1265.
1266
1284
Muiris mac Néill Ó Conchobair, O.P.
Also known as Mauricius. Elected after 27 February 1266 and received possession of the temporalities after 23 April 1266. Died in office c. 5 December 1284.
1285
Amiaim Ó Tommaltaig (bishop-elect)
Elected and confirmed in 1285, but was never consecrated.
1285
1296
Gilla Ísu mac in Liathána Ó Conchobair, O.Praem.
Also known as Gelasius. Formerly Abbot of Loch Cé, near Boyle, County Roscommon. Elected on 10 August 1285 and received possession of the temporalities after 5 March 1285. Died in office before September 1296.
1297
1303
Máel Sechlainn mac Briain, O.Cist.
Also known as Malachias. Formerly Abbot of Boyle. Elected before 2 November 1296 and received possession of the temporalities on 7 September 1297. Died in office before March 1303.
1296
1297
Marianus Ó Donnabair, O.P.
Elected in September or October 1296. Died in office in 1297.
1303
1307
Donnchad Ó Flannacain, O.Cist.
Also known as Donatus. Formerly Abbot of Boyle. Elected before 28 June 1303 and received possession of the temporalities after 28 June 1303. Died in office on 22 June 1307.
1307
1310
Cathal Ó Conchobair, O.Praem.
Also known as Carolus. Formerly Abbot of Loch Cé, near Boyle, County Roscommon. Elected after 2 September 1307, consecrated c. October 1307, and received possession of the temporalities on 12 March 1309. Resigned in 1310 and died in 1343.
Also known as Malachias. Formerly a canon of Elphin. Appointed on 22 June 1310 and received possession of the temporalities on 7 December 1310. Translated to Tuam on 19 December 1312.
1313
1326
Lúrint Ó Lachtnáin
Also known as Laurentius. Formerly a canon of Elphin. Appointed on 21 January 1313, consecrated after 19 February 1313, and received possession of the temporalities on 22 September 1314. Died in office in 1326.
1326
1354
Seoán Ó Fínnachta
Elected and consecrated in 1326, and received possession of the temporalities after 31 December 1326. Died in office in 1354.
c. 1355
1357
Carolus
Elected c. 1355. Deprived in 1357.
1357
1372
Gregorius Ó Mocháin
Formerly Provost of Killala. Appointed on 27 February 1357 and received possession of the temporalities on 26 June 1357. Translated to Tuam in 1372.
1372
1404
Thomas Barrett
Formerly Archdeacon of Annaghdown. Appointed on 16 June 1372 and received possession of the temporalities on 24 November 1372. Deprived by Pope Clement VIII on 17 January 1383, but without effect. Continued in office until his death in 1404.
1383
Seoán Ó Mocháin
Possibly a priest of the Diocese of Achonry. Appointed sometime between 17 January and 19 February 1383 by Pope Clement VII, but apparently did not take effect. Later appointed Bishop of Derry on 16 September 1394.
c. 1405
Gerald Caneton, O.S.A.
Translated from Cloyne c. 1405, but did not take effect.
1407
1417
Seaán Ó Gráda
Also known as John O'Grada. Appointed before 12 October 1407. Died in office in 1417.
1412
1414
Thomas Colby, O.Carm.
Appointed by Antipope John XXIII on 18 March 1412, in opposition to Seaán Ó Gráda, but did not take effect. Translated to Waterford and Lismore in February 1414.
1418
unknown
Robert Fosten, O.F.M.
Also known as Robert Forster. Appointed on 18 February 1418. Acted as a suffragan bishop in the Diocese of Durham (1426). Died in office after 1430
1421
Edmund Barrett
Also known as Éamonn 'mac an easbuig' Bairéad. Appointed in 1421 and died in the same year.
unknown
1429
Johannes
Deprived before 26 January 1429 and died before March 1434.
1429
1429
Laurentius Ó Beólláin
Formerly a canon of Elphin. Appointed on 26 January 1429. Died in office before December 1429.
1429
1449
William Ó hEidheáin
Appointed on 2 December 1429. Translated to Emly on 20 October 1449.
Also known as Georgius de Brana, George Braua, or 'an-t-easbog Gréagach'. Translated from Dromore 15 April 1499. Resigned several years later, but the date not known. Died sometime between 18 August and 27 December 1529.
bef. 1501
unknown
Cornelius Ó Flannagain
Appointed before 1501, but not known if took effect.
1508
1511
Christopher Fisher
Appointed on 12 December 1508. Also Prebendary of Husthwaite, York (1507–11). Died in 1511.
aft. 1511
?1524
Thomas Walsh
Prior of Bradenstoke (1483–1524).[8] He succeeded Fisher as prebendary of Husthwaite, York, and was likewise named by Erasmus as Bishop of Elphin.[9] Died in 1524.[8]
Also known as Roland Burke. Nominated on 23 November 1551 and appointed by letters patent 10 April 1552. Also was Bishop of Clonfert (1537–1580). Held possession of both sees until his death on 20 June 1580.
Translated from Clonfert and Kilmacduagh. Nominated on 18 March 1724 and appointed by letters patent on 16 April 1724. Translated to Cashel on 6 January 1730.
Translated from Waterford and Lismore. Nominated on 12 April 1810 and appointed by letters patent on 30 April 1810. Translated to Tuam on 10 November 1819.
Appointed on 16 June 1539. There is some confusion with this appointment; he may be Eugene Magennis, who was appointed Bishop of Down and Connor on the same day since nothing further is known of William Magennis.
1539
1541
Gabriel de S. Serio, O.S.B.
Appointed on 27 August 1539. Translated to Ferns on 3 June 1541.
1541
1542
Bernard O'Donnell, O.F.M.
Translated from Ferns on 3 June 1541. Died in office before 5 July 1542.
Appointed on 5 May 1542 and consecrated on 7 September 1542. He left Ireland in the later years of the reign of King Henry VIII and returned in the reign of Queen Mary I. Resigned in 1561 and died 1564.
1545
c. 1553/54
John O'Heyne (apostolic administrator)
Bishop of Cork and Cloyne (1540–1556). During the absence of Bishop O'Higgins, O'Heyne was appointed Apostolic Administrator of Elphin by papal brief on 20 February 1545. He ceased to administer the see of Elphin on the return of O'Higgins c. 1553–54.
1562
1594
Andrew O'Crean, O.P.
Appointed on 28 January 1562. Died in office in 1594.
Also known as Dominic Burke. Appointed on 16 May 1671 (N.S.), papal brief issued on 13 July 1671 (N.S.), and consecrated on 22 November 1671 (N.S.). Died in office on 31 December 1703 or 1 January 1704.
Appointed on 21 March 1707 (N.S.), papal brief issued on 31 March 1707 (N.S.), and consecrated c. August 1707 (N.S.). Died in office in September 1717.
Appointed coadjutor bishop of Elphin on 12 January 1819 and consecrated on 27 June 1819. Succeeded diocesan bishop on 8 May 1827. Died in office on 16 September 1843.
Appointed coadjutor bishop of Elphin by papal brief on 26 February 1856 and consecrated on 7 September 1856. Succeeded diocesan bishop on 1 December 1858. Died in office on 15 January 1895.
Appointed coadjutor bishop of Elphin on 12 January 1895, succeeded diocesan bishop on 8 February 1895, and consecrated on 24 March 1895. Died in office on 19 October 1912.
Appointed coadjutor bishop of Elphin on 5 April 1923 and consecrated 24 June 1923. Succeeded diocesan bishop on 17 July 1926. Died in office on 5 April 1950.
Appointed an auxiliary bishop of Elphin on 16 October 1970 and consecrated on 8 November 1970. Appointed diocesan bishop of Elphin on 12 March 1971. Retired on 24 May 1994 and died on 22 August 1996.
Cotton, Henry (1850). The Province of Connaught. Fasti Ecclesiae Hiberniae: The Succession of the Prelates and Members of the Cathedral Bodies of Ireland. Vol. 4. Dublin: Hodges and Smith.
Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I., eds. (1986). Handbook of British Chronology (3rd, reprinted 2003 ed.). Cambridge: Cambridge University Press. ISBN0-521-56350-X.
Moody, T. W.; Martin, F. X.; Byrne, F. J., eds. (1984). Maps, Genealogies, Lists: A Companion to Irish History, Part II. A New History of Ireland. Vol. IX. Oxford: Oxford University Press. ISBN0-19-821745-5.