| Birthdate | Age | Name | Current Title |
| Oldest |
| 1 Oct 1917 |
| Cahal Brendan Cardinal Daly | Archbishop Emeritus of Armagh |
| 11 Jan 1918 |
| Bishop John Mackey | Bishop Emeritus of Auckland, New Zealand |
| 3 Apr 1919 |
| Bishop Myles McKeon | Bishop Emeritus of Bunbury, Australia |
| 18 May 1920 |
| Archbishop Emanuele Gerada | Apostolic Nuncio Emeritus to Ireland |
| 10 Dec 1920 |
| Bishop Michael Russell | Bishop Emeritus of Waterford and Lismore |
| 10 Mar 1921 |
| Bishop Bernard Patrick Devlin | Bishop Emeritus of Gibraltar, Gibraltar |
| 6 Jan 1924 |
| Bishop John C. O'Riordan, C.S.Sp. | Bishop Emeritus of Kenema, Sierra Leone |
| 14 Jan 1924 |
| Bishop Francis Gerard Brooks | Bishop Emeritus of Dromore |
| 1 Mar 1925 |
| Bishop Edmund Joseph Fitzgibbon, S.P.S. | Bishop Emeritus of Warri, Nigeria |
| 26 Aug 1925 |
| Bishop Thomas Anthony Finnegan | Bishop Emeritus of Killala |
| 24 Mar 1926 |
| Desmond Cardinal Connell | Archbishop Emeritus of Dublin |
| 24 Feb 1927 |
| Bishop Senan Louis O'Donnell, O.S.A. | Bishop Emeritus of Maiduguri, Nigeria |
| Youngest |
| 26 Feb 1951 |
| Bishop John Gerard Noonan | Auxiliary Bishop of Miami, Florida, USA |
| 25 Dec 1950 |
| Bishop Noël Treanor | Bishop of Down and Connor |
| 12 Apr 1950 |
| Bishop Donal McKeown | Auxiliary Bishop of Down and Connor |
| 19 Feb 1949 |
| Archbishop Richard Anthony Burke, S.P.S. | Archbishop of Benin City, Nigeria |
| 2 Feb 1949 |
| Bishop John McAreavey | Bishop of Dromore |
| 16 Feb 1948 |
| Bishop John Fleming | Bishop of Killala |
| 2 Sep 1947 |
| Bishop Kevin Joseph Farrell | Bishop of Dallas, Texas, USA |
| 27 Apr 1947 |
| Bishop Patrick Kevin Lynch, SS.CC. | Auxiliary Bishop of Southwark, England, Great Britain |
| 20 May 1946 |
| Bishop Brendan Kelly | Bishop of Achonry |
| 9 May 1946 |
| Bishop George Stack | Auxiliary Bishop of Westminster, England, Great Britain |
| 15 Apr 1946 |
| Archbishop Michael Neary | Archbishop of Tuam |
| 20 Jun 1945 |
| Bishop Denis Brennan | Bishop of Ferns |