John Brennan
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 | Maureen H. Brennan 1937-2020 |
| Maureen H. Brennan | |
| B: | 12 May 1937 |
| New Haven, CT, US | |
| D: | 5 Apr 2020 |
| Waterbury, CT, US | |
 | John Joseph Brennan 1939-2013 |
| John Joseph Brennan | |
| B: | 27 Jun 1939 |
| New Haven, CT, US | |
| D: | 14 Feb 2013 |
| Milford, CT, US | |
| John Joseph Brennan 1915- |
| John Joseph Brennan | |
| B: | 1 Aug 1915 |
| Waterbury, CT, US | |
| Patrick Eugene Brennan 1918-1964 |
| Patrick Eugene Brennan | |
| B: | 7 Mar 1918 |
| Waterbury, CT, US | |
| D: | 18 Aug 1964 |
| New Haven, CT, US | |
| Johannah McGillicuddy 1875-1952 |
| Johannah McGillicuddy | |
| B: | 27 Mar 1875 |
| Garrough, Kilcrohane Parish, Co. Kerry, IE | |
| M: | 27 Oct 1914 |
| New Haven, CT, US | |
| D: | 16 Jun 1952 |
| West Haven, CT, US | |