Also known as O'Carroll. He was either bishop of Ross or Roscrea.
fl. 1173–1177
Benedictus
fl. 1192
c. 1195
Mauricius
c. 1196
1223
Daniel
Elected circa 1196 and consecrated before January 1198. Died in office in 1223.
1224
c. 1253
Fingen Ó Clothna
Also known as Florentius. Elected before 7 May 1224. Resigned before January 1253.
1253
1265
Mauricius
Formerly precentor of Cloyne. Elected before 16 July 1253, consecrated after 2 March 1254, and received possession of the temporalities after 18 July 1254. Resigned circa 25 April 1265.
1269
1274
Ualter Ó Mithigéin, O.F.M.
Also known as Walter O'Mithigein. Elected before 23 September 1269 and received possession of the temporalities after that date. Died in office before 13 December 1274.
fl. 1269–1272
Matthaeus
Elected circa 1269 and confirmed by Pope Gregory X on 28 December 1272, but did not get possession of the see.
1275
1290
Peter Ó h-Uallacháin, O.Cist.
Possibly also known as Patricius. Elected before 25 March 1275 and received possession of the temporalities on 25 March 1275. Died in office on 21 September 1290.
1291
1310
Laurentius
Formerly a canon of Ross. Elected before 12 January 1291 and received possession of the temporalities on that date. Died in office before 8 March 1310.
1310
1320
Matthaeus Ó Finn
Elected and received possession of the temporalities after 8 March 1310. Died in office on 16 October 1320.
1320
1331
See vacant
1331
1335
Laurentius Ó h-Uallacháin
Elected on 30 April 1331 and received possession of the temporalities on 14 August 1331. Died in office in 1335.
1336
1377
Dionysius
Elected in 1336. Died in office in 1377.
1377
1379
See vacant
1379
c. 1399
Bernard Ó Conchobhair, O.F.M.
Also known as Bernard O'Connor. Received possession of the temporalities on 3 February 1379. Translated to Limerick circa 1399, but the translation did not take effect.
c. 1399
Peter Curragh
Also known as Peter Creagh. Translated from Limerick circa 1399, but the translation did not take effect.
c. 1399
Thaddaeus O Ceallaigh
Abbot of Maure (Abbeymahon). Papal provision circa 1399, but did not take effect.
1401
1403
Mac Raith Ó hEidirsgeóil
Also known as Macrobius or Matthaeus. Papal provision before 4 August 1401, but annulled on 25 June 1403, and died in 1418.
1403
aft.1420
Stephen Brown, O.Carm.
Papal provision on 24 April 1399, but apparently did not take effect. Received possession of the temporalities on 6 May 1402 and papal provision again on 25 June 1403. Acted as a suffragan bishop in the dioceses of St David's (1408), Bath & Wells (1410), Hereford (1418), and Worcester (1420). Died after 1420.
1418
1423
Walter Formay, O.F.M.
Papal provision on 14 November 1418, Died in office before September 1423.
1424
John Bloxworth, O.Carm.
Papal provision on 24 September 1424, but did not take effect.
1426
unknown
Conchobhar Mac Fhaolchadha, O.F.M.
Also known as Cornelius. Papal provision on 19 August 1426. Not known his episcopate ended, but died before December 1448.
unknown
c. 1431
Maurice Brown
Died before July 1431, since he only appears in the papal provision of his successor Walter of Leicester.
1431
unknown
Walter of Leicester, O.P.
Papal provision on 13 July 1431.
1434
unknown
Richard Clerk
Formerly a clerc in the Diocese of Meath. Papal provision on 10 March 1434. Acted as a suffragan bishop in the dioceses of London (1434–41), Canterbury (1439–65), and Salisbury (1454). Died after 1465.
1448
bef. 1474
Domhnall Ó Donnobháin
Formerly a clerc in the Diocese of Ross. Papal provision on 4 November 1448. Resigned and died before 1474
unknown
1460
Johnannes
Acted as a suffragan bishop in the Bath & Wells (1450–60). Died in March 1460.
1460
unknown
Robert Colynson
Formerly a priest in the Diocese of York. Papal provision on 19 March 1460
1464
unknown
John Hornse
Also known as John Skipton. Acted as a suffragan bishop in the dioceses of Norwich (1466–69) and Bath & Wells (1479–81). Died after 1481.
1473
1494
Aodh Ó hEidirsgeóil
Also known as Odo. Formerly a canon of Ross. Papal provision on 24 March and consecrated on 11 April 1473. Died before September 1494.
Also known as Tadhg Mac Cartaigh. Formerly a canon of Cork. Papal provision on 29 March and consecrated on 3 May 1482. Deprived on 3 August 1483. Later appointed Bishop of Cork and Cloyne on 21 April 1490.
Translated from Clogher on 26 September 1494. Resigned on 4 November 1517.
1517
1519
Seaán Ó Muirthile, O.Cist.
Also known as John O'Murily. Formerly abbot of Maure (Abbeymahon). Papal provision on 4 November 1517. Died on 9 January 1519.
1519
1526
Tadhg Ó Raghallaigh
Also known as Thaddeus. Papal provision Bishop of Dromore on 30 April 1511 and Bishop of Ross on 23 December 1519. Held both sees until his death sometime before June 1526.
fl. 1523
Bonaventura
A native of Spain. No record of a papal provision, but believed to be alive around 27 March 1523.
Bishop of Cork and Cloyne (1693–1712). Appointed apostolic administrator of Ross by papal brief on 11 March 1647 (N.S.). Resigned on 22 January 1712 (N.S.) and died on 16 February 1712 (N.S.).
1712
1732
See vacant
Christopher Butler, Archbishop of Cashel, may have been apostolic administrator of Ross from circa 1711 until resigned the post in September 1730, but this has not been substantiated.
Bishop of Cork and Cloyne (1954–1958). Appointed apostolic administrator of Ross by papal brief on 20 June 1732 (N.S.). Died in office on 14 August 1747.
By special arrangement with the Holy See, James Roche continued as apostolic administrator of Ross from 26 June 1931 until succeeded diocesan bishop of Cloyne on 23 March 1935.
Bishop of Cork (1952–1958). Appointed apostolic administrator of Ross on 20 February 1954. Became Bishop of Cork and Ross on 19 April 1958 when the two sees were united.
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.
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