| Gender | Male | |
| Person ID | I2771 | Smithwick Family Tree |
| Last Modified | 12 Dec 2017 | |
| Father | John Patrick Grennan, b. 8 Jun 1894, Ardmore, PA, US | |
| Mother | Pauline E. Zinker, b. Abt 1897, Germany | |
| Family ID | F952 | Group Sheet | Family Chart |
| Notes | At least one living or private individual is linked to this note - Details withheld. |