Changes in Ecclesiastical Jurisdictions
in Ireland
Changes in Ecclesiastical Jurisdictionsin Ireland | |
Date | Change |
| 400 | Diocese of Emly was established |
| 400 | Abbacy nullius of Trim was established |
| 439 | Abbacy nullius of Dunshaughlin was established |
| 440 | Abbacy nullius of Ardmore was established |
| 440 | Abbacy nullius of Killala was established |
| 445 | Archdiocese of Armagh was established |
| 450 | Abbacy nullius of Ardagh was established |
| 450 | Abbacy nullius of Duleek was established |
| 450 | Abbacy nullius of Elphin was established |
| 450 | Abbacy nullius of Killashee was established |
| 454 | Abbacy nullius of Clogher was established |
| 490 | Abbacy nullius of Kildare was established |
| 500 | Abbacy nullius of Ardcarne was established |
| 500 | Abbacy nullius of Ardfert was established |
| 500 | Abbacy nullius of Brefinnia was established |
| 500 | Abbacy nullius of Connor was established |
| 500 | Abbacy nullius of Inniscathy was established |
| 500 | Abbacy nullius of Kilfenora was established |
| 500 | Abbacy nullius of Louth was established |
| 500 | Abbacy nullius of Sl茅ibhte was established |
| 510 | Abbacy nullius of Sl茅ibhte was suppressed (to Abbacy nullius of Kildare) |
| 510 | Abbacy nullius of Tuam was established |
| 520 | Abbacy nullius of Clonard was established |
| 530 | Abbacy nullius of Seir Kieran was established |
| 540 | Abbacy nullius of Clonmacnois was established |
| 550 | Abbacy nullius of Achonry was established |
| 550 | Abbacy nullius of Aghadoe was established |
| 550 | Abbacy nullius of Clonfert was established |
| 550 | Abbacy nullius of Derry was established |
| 554 | Abbacy nullius of Ceanannus M贸r was established |
| 570 | Abbacy nullius of Ross was established |
| 580 | Abbacy nullius of Cloyne was established |
| 598 | Abbacy nullius of Ferns was established |
| 600 | Abbacy nullius of Annaghdown was established |
| 600 | Abbacy nullius of Cong was established |
| 600 | Abbacy nullius of Cork was established |
| 600 | Abbacy nullius of Glennd谩locha was established |
| 600 | Abbacy nullius of Roscrea was established |
| 620 | Abbacy nullius of Kilmacduagh was established |
| 625 | Abbacy nullius of Leighlin was established |
| 630 | Abbacy nullius of Lismore was established |
| 640 | Abbacy nullius of Killaloe was established |
| 650 | Abbacy nullius of Mayo was established |
| 700 | Abbacy nullius of Raphoe was established |
| 900 | Diocese of Cashel was established (from Diocese of Emly) |
| 1000 | Diocese of Limerick was established (became suffragan of Canterbury) |
| 1038 | Diocese of Dublin was established (from Abbacy nullius of Glennd谩locha and became suffragan of Canterbury) |
| 1052 | Abbacy nullius of Seir Kieran was renamed as Abbacy nullius of Aghaboe |
| 1096.12.27 | Diocese of Waterford was established (from Abbacy nullius of Lismore and became suffragan of Canterbury) |
| 1111 | Abbacy nullius of Achonry was suppressed (to Diocese of Killala) |
| 1111 | Abbacy nullius of Aghaboe was promoted as Diocese of Aghaboe |
| 1111 | Abbacy nullius of Aghadoe was suppressed (to Diocese of Raigh Maighe Beiscirt) |
| 1111 | Abbacy nullius of Ardcarne was suppressed (to Diocese of Elphin) |
| 1111 | Abbacy nullius of Clogher was promoted as Diocese of Clogher |
| 1111 | Abbacy nullius of Clonfert was promoted as Diocese of Clonfert |
| 1111 | Abbacy nullius of Cloyne was promoted as Diocese of Cloyne |
| 1111 | Abbacy nullius of Cong was promoted as Diocese of Cong |
| 1111 | Abbacy nullius of Cork was promoted as Diocese of Cork |
| 1111 | Abbacy nullius of Dunshaughlin was suppressed (to Abbacy nullius of Clonard) |
| 1111 | Abbacy nullius of Elphin was promoted as Diocese of Elphin (gained territory from the suppressed Abbacy nullius of Ardcarne) |
| 1111 | Abbacy nullius of Ferns was promoted as Diocese of Ferns |
| 1111 | Abbacy nullius of Glennd谩locha was promoted as Diocese of Glendalough |
| 1111 | Abbacy nullius of Kildare was promoted as Diocese of Kildare |
| 1111 | Abbacy nullius of Killala was promoted as Diocese of Killala (gained territory from the suppressed Abbacy nullius of Achonry) |
| 1111 | Abbacy nullius of Killaloe was promoted as Diocese of Killaloe |
| 1111 | Abbacy nullius of Leighlin was promoted as Diocese of Leighlin |
| 1111 | Abbacy nullius of Lismore was promoted as Diocese of Lismore |
| 1111 | Abbacy nullius of Ardfert was promoted as Diocese of Raigh Maighe Beiscirt (gained territory from the suppressed Abbacy nullius of Aghadoe) |
| 1111 | Abbacy nullius of Tuam was promoted as Diocese of Tuam |
| 1117 | Diocese of Raigh Maighe Beiscirt was renamed as Diocese of Ardfert and Aghadoe |
| 1118 | Diocese of Elphin was renamed as Diocese of Roscommon |
| 1120 | Diocese of Aghaboe was renamed as Diocese of Ossory |
| 1152 | Diocese of Achonry was restored (from Diocese of Killala and became suffragan of Tuam) |
| 1152 | Abbacy nullius of Annaghdown was promoted as Diocese of Annaghdown (became suffragan of Tuam) |
| 1152 | Abbacy nullius of Ardagh was promoted as Diocese of Ardagh (became suffragan of Armagh) |
| 1152 | Diocese of Ardfert and Aghadoe lost territory to Diocese of Inniscathy |
| 1152 | Abbacy nullius of Ardmore was promoted as Diocese of Ardmore (became suffragan of Cashel) |
| 1152 | Abbacy nullius of Brefinnia was promoted as Diocese of Brefinnia (became suffragan of Armagh) |
| 1152 | Diocese of Cashel was promoted as Metropolitan Archdiocese of Cashel (with suffragan sees Ardfert and Aghadoe, Ardmore, Cloyne, Cork, Emly, Glendalough, Inniscathy, Kilfenora, Killaloe, Leighlin, Limerick, Lismore, Roscrea and Waterford) |
| 1152 | Abbacy nullius of Ceanannus M贸r was promoted as Diocese of Ceanannus M贸r (became suffragan of Armagh) |
| 1152 | Abbacy nullius of Clonard was promoted as Diocese of Clonard (gained territory from the suppressed Abbacy nullius of Trim and became suffragan of Armagh) |
| 1152 | Abbacy nullius of Clonmacnois was promoted as Diocese of Clonmacnois |
| 1152 | Diocese of Cong was suppressed (to Metropolitan Archdiocese of Tuam) |
| 1152 | Abbacy nullius of Connor was promoted as Diocese of Connor (became suffragan of Armagh) |
| 1152 | Diocese of Dublin was promoted as Metropolitan Archdiocese of Dublin (with suffragan sees Ferns, Kildare and Ossory and gained territory from Diocese of Glendalough) |
| 1152 | Abbacy nullius of Duleek was promoted as Diocese of Duleek (became suffragan of Armagh) |
| 1152 | Diocese of Glendalough lost territory to Metropolitan Archdiocese of Dublin |
| 1152 | Abbacy nullius of Inniscathy was promoted as Diocese of Inniscathy (gained territory from Diocese of Ardfert and Aghadoe and became suffragan of Cashel) |
| 1152 | Abbacy nullius of Kilfenora was promoted as Diocese of Kilfenora (became suffragan of Cashel) |
| 1152 | Abbacy nullius of Killashee was suppressed (to Diocese of Kildare) |
| 1152 | Abbacy nullius of Kilmacduagh was promoted as Diocese of Kilmacduagh (became suffragan of Tuam) |
| 1152 | Abbacy nullius of Mayo was promoted as Diocese of Mayo (became suffragan of Tuam) |
| 1152 | Abbacy nullius of Raphoe was promoted as Diocese of Raphoe (became suffragan of Armagh) |
| 1152 | Abbacy nullius of Roscrea was promoted as Diocese of Roscrea (became suffragan of Cashel) |
| 1152 | Abbacy nullius of Ross was promoted as Diocese of Ross |
| 1152 | Abbacy nullius of Trim was suppressed (to Diocese of Clonard) |
| 1152 | Diocese of Tuam was promoted as Metropolitan Archdiocese of Tuam (with suffragan sees Achonry, Annaghdown, Clonfert, Killala, Kilmacduagh, Mayo and Roscommon and gained territory from the suppressed Diocese of Cong) |
| 1152 | Archdiocese of Armagh was promoted as Metropolitan Archdiocese of Armagh (with suffragan sees Ardagh, Brefinnia, Ceanannus M贸r, Cin茅l nE贸gain and Ardstraw, Clogher, Clonard, Connor, Down, Duleek, Raphoe and Louth) |
| 1152 | Abbacy nullius of Derry was promoted as Diocese of Cin茅l nE贸gain and Ardstraw (gained territory from the suppressed Diocese of Ardstraw and became suffragan of Armagh) |
| 1156 | Diocese of Roscommon was renamed as Diocese of Elphin |
| 1160 | Diocese of Duleek was suppressed (to Diocese of Clonard) |
| 1160 | Diocese of Roscrea was suppressed (to Diocese of Killaloe) |
| 1173.02.11 | Diocese of Cin茅l nE贸gain and Ardstraw was renamed as Diocese of Maghera, Cen茅l Fearadhaigh and Ardstraw |
| 1174 | Diocese of Clonard was renamed as Diocese of Clonard |
| 1179 | Diocese of Glendalough lost territory to Metropolitan Archdiocese of Dublin |
| 1188 | Diocese of Inniscathy was suppressed (to Diocese of Ardfert and Aghadoe, Diocese of Killaloe and Diocese of Limerick) |
| 1200 | Abbacy nullius of Louth was suppressed (to Diocese of Clogher) |
| 1202 | Diocese of Clonard was suppressed (to establish Diocese of Meath) |
| 1202 | Diocese of Meath was established (from the suppressed Diocese of Clonard and became suffragan of Armagh) |
| 1210 | Diocese of Mayo was suppressed (to Metropolitan Archdiocese of Tuam) |
| 1211 | Diocese of Ardmore was suppressed (to Diocese of Lismore) |
| 1211 | Diocese of Ceanannus M贸r was suppressed (to Diocese of Meath) |
| 1215.02.25 | Diocese of Glendalough was suppressed (to Metropolitan Archdiocese of Dublin) |
| 1253.08 | Diocese of Annaghdown was suppressed (to Metropolitan Archdiocese of Tuam) |
| 1254 | Diocese of Maghera, Cen茅l Fearadhaigh and Ardstraw was renamed as Diocese of Derry |
| 1306 | Diocese of Annaghdown was restored (from Metropolitan Archdiocese of Tuam and became suffragan of Tuam) |
| 1363.06.16 | Diocese of Lismore was suppressed (to Diocese of Waterford and Lismore) |
| 1363.06.16 | Diocese of Waterford was renamed as Diocese of Waterford and Lismore (gained territory from the suppressed Diocese of Lismore) |
| 1428 | Diocese of Mayo was restored (from Metropolitan Archdiocese of Tuam) |
| 1429 | Diocese of Cloyne was suppressed (to Diocese of Cork and Cloyne) |
| 1429 | Diocese of Cork was renamed as Diocese of Cork and Cloyne (gained territory from the suppressed Diocese of Cloyne) |
| 1439.07.29 | Diocese of Connor was suppressed (to Diocese of Down) |
| 1460 | Diocese of Brefinnia was renamed as Diocese of Kilmore |
| 1484.08.28 | Collegiate nullius of Saint Nicholas was established (from Diocese of Annaghdown) |
| 1580.10.17 | Diocese of Annaghdown was suppressed (to Metropolitan Archdiocese of Tuam) |
| 1631 | Diocese of Mayo was suppressed (to Metropolitan Archdiocese of Tuam) |
| 1694.11.29 | Diocese of Kildare was renamed as Diocese of Kildare and Leighlin (gained territory from the suppressed Diocese of Leighlin) |
| 1694.11.29 | Diocese of Leighlin was suppressed (to Diocese of Kildare and Leighlin) |
| 1718.05.10 | Diocese of Emly was suppressed (to Metropolitan Archdiocese of Cashel and united to Metropolitan Archdiocese of Cashel) |
| 1747.12.10 | Diocese of Cloyne and Ross was restored (from Diocese of Cork and Cloyne, from the suppressed Diocese of Ross and became suffragan of Cashel) |
| 1747.12.10 | Diocese of Cork and Cloyne was renamed as Diocese of Cork (lost territory to establish Diocese of Cloyne and Ross) |
| 1747.12.10 | Diocese of Ross was suppressed (to establish Diocese of Cloyne and Ross) |
| 1756.08.11 | Diocese of Clonmacnois was suppressed (to Diocese of Ardagh and united to Diocese of Ardagh) |
| 1831.04.26 | Collegiate nullius of Saint Nicholas was promoted as Diocese of Galway (gained territory from Metropolitan Archdiocese of Tuam and became suffragan of Tuam) |
| 1831.04.26 | Metropolitan Archdiocese of Tuam lost territory to Diocese of Galway |
| 1850.11.24 | Diocese of Cloyne and Ross was renamed as Diocese of Cloyne (lost territory to establish Diocese of Ross) |
| 1850.11.24 | Diocese of Ross was restored (from Diocese of Cloyne and Ross) |
| 1883.06.05 | Diocese of Galway was renamed as Diocese of Galway and Kilmacduagh (gained territory from the suppressed Diocese of Kilfenora and Diocese of Kilmacduagh and gained title of Kilfenora) |
| 1883.06.05 | Diocese of Kilfenora was suppressed (to Diocese of Galway and Kilmacduagh and united to Diocese of Galway) |
| 1883.06.05 | Diocese of Kilmacduagh was suppressed (to Diocese of Galway and Kilmacduagh) |
| 1952.12.20 | Diocese of Ardfert and Aghadoe was renamed as Diocese of Kerry |
| 1958.04.19 | Diocese of Cork was renamed as Diocese of Cork and Ross (gained territory from the suppressed Diocese of Ross) |
| 1958.04.19 | Diocese of Ross was suppressed (to Diocese of Cork and Ross) |
| 1969 | Titular Episcopal See of Ardcarne was restored |
| 1969 | Titular Episcopal See of Ardmore was restored |
| 1969 | Titular Episcopal See of Ath Truim was restored |
| 1969 | Titular Episcopal See of Ceanannus M贸r was restored |
| 1969 | Titular Episcopal See of Cell Ausaille was restored |
| 1969 | Titular Episcopal See of Cluain Iraird was restored |
| 1969 | Titular Episcopal See of Cunga F茅ichin was restored |
| 1969 | Titular Episcopal See of Domnach Sechlainn was restored |
| 1969 | Titular Episcopal See of Duleek was restored |
| 1969 | Titular Episcopal See of Eanach D煤in was restored |
| 1969 | Titular Episcopal See of Glennd谩locha was restored |
| 1969 | Titular Episcopal See of Inis Cathaig was restored |
| 1969 | Titular Episcopal See of Louth was restored |
| 1969 | Titular Episcopal See of Mayo was restored |
| 1969 | Titular Episcopal See of Roscrea was restored |
| 1969 | Titular Episcopal See of Slebte was restored |
| 1970 | Titular Episcopal See of Domnach Sechlainn was renamed as Titular Episcopal See of Domnach Sechnaill |
| 2015.01.26 | Metropolitan Archdiocese of Cashel was renamed as Metropolitan Archdiocese of Cashel and Emly (lost title of Emly) |
Last updated on 2026.04.12
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