John Patrick Grennan
1894 - 1965 (71 years)
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| John Patrick Grennan, III 1944-1999 |
| John Patrick Grennan, III | |
| B: | 1 Dec 1944 |
| Hartford, CT, US | |
| D: | 9 Jan 1999 |
| Bristol, CT, US | |
 | John Patrick Grennan, Jr. 1921-2007 |
| John Patrick Grennan, Jr. | |
| B: | 21 Aug 1921 |
| Bristol, CT, US | |
| D: | 8 Jul 2007 |
| Jupiter, FL, US | |
Rita Rose Hackett 1920-1991 |
| Rita Rose Hackett | |
| B: | 19 Jul 1920 |
| M: | 9 Aug 1943 |
| Norfolk, VA, US | |
| D: | 20 Jun 1991 |
| Jupiter, FL, US | |
| Anna Mae Grennan Abt 1924- |
| Anna Mae Grennan | |
| B: | Abt 1924 |
| CT, US | |
| Paul Francis Grennan 1930-2010 |
| Paul Francis Grennan | |
| B: | 9 Sep 1930 |
| Bristol, CT, US | |
| D: | 30 Jan 2010 |
| Bristol, CT, US | |
|
| John Patrick Grennan 1894-1965 |
| John Patrick Grennan | |
| B: | 8 Jun 1894 |
| Ardmore, PA, US | |
| D: | 12 Dec 1965 |
| Bristol, CT, US | |
 | Pauline E. Zinker Abt 1897-1931 |
| Pauline E. Zinker | |
| B: | Abt 1897 |
| Germany | |
| D: | 21 Mar 1931 |
| Bristol, CT, US | |
| Mae Canfield Abt 1900- |
| Mae Canfield | |
| B: | Abt 1900 |
| MA, US | |