| Birthdate | Age | Name | Current Title |
| Oldest |
| 11 Jan 1918 |
| Bishop John Mackey | Bishop Emeritus of Auckland, New Zealand |
| 3 Apr 1919 |
| Bishop Myles McKeon | Bishop Emeritus of Bunbury, Australia |
| 6 Jan 1924 |
| Bishop John C. O’Riordan, C.S.Sp. | Bishop Emeritus of Kenema, Sierra Leone |
| 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 |
| 24 Apr 1927 |
| Bishop Eamon Casey | Bishop Emeritus of Galway and Kilmacduagh |
| 10 Jul 1929 |
| Bishop Daniel Joseph Mullins | Bishop Emeritus of Menevia, Wales, Great Britain |
| 22 Feb 1930 |
| Bishop David Cremin | Auxiliary Bishop Emeritus of Sydney, Australia |
| 10 May 1930 |
| Bishop William Dermott Molloy McDermott | Bishop Emeritus of Huancavélica, Peru |
| 23 Oct 1930 |
| Bishop Thomas Joseph Flanagan | Auxiliary Bishop Emeritus of San Antonio, Texas, USA |
| 9 Apr 1931 |
| Bishop Patrick Joseph Walsh | Bishop Emeritus of Down and Connor |
| 5 Jun 1931 |
| Bishop Laurence Forristal | Bishop Emeritus of Ossory |
| Youngest |
| 7 Jun 1963 |
| Bishop Denis Nulty | Bishop of Kildare and Leighlin |
| 30 Oct 1961 |
| Archbishop Eamon Martin | Coadjutor Archbishop of Armagh |
| 28 Mar 1960 |
| Bishop Brendan Leahy | Bishop of Limerick |
| 13 Oct 1959 |
| Archbishop Charles John Brown | Apostolic Nuncio to Ireland |
| 21 Oct 1958 |
| Archbishop Eugene Martin Nugent | Apostolic Nuncio to Madagascar |
| 23 Jan 1957 |
| Bishop Raymond Anthony Browne | Bishop of Kerry |
| 8 Aug 1952 |
| Bishop Kieran O’Reilly, S.M.A. | Bishop of Killaloe |
| 16 Dec 1951 |
| Bishop William Crean | Bishop of Cloyne |
| 22 Sep 1951 |
| Bishop Michael Lenihan, O.F.M. | Bishop of La Ceiba, Honduras |
| 26 Feb 1951 |
| Bishop John Gerard Noonan | Bishop of Orlando, 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 |