Full record for O'Brien, John
| Last Name | O'Brien |
| First Name | John |
| Nativity | Canada |
| Business | Farmer |
| Year Settled | 1855 |
| Post Office | Wolfe Island |
| Township | Wolfe Island |
| County | Frontenac |
| Atlas Date | 1878 |
| Concession and Lot | Lot size |
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