Full record for Callahan, John
| Last Name | Callahan |
| First Name | John |
| Nativity | Otonabee Tp., Canada |
| Business | Farmer |
| Year Settled | 1838 |
| Post Office | Peterborough |
| Township | Otonabee |
| County | Peterborough |
| Atlas Date | 1871 |
| Concession and Lot | Lot size |
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