James Mathewson (died January 9, 1843) was an Irish-born miller, lumberman and political figure in Upper Canada. He represented Frontenac in the Legislative Assembly of Upper Canada from 1836 to 1841 as a Conservative.

He was born in County Antrim. Mathewson lived in Pittsburgh Mills, Pittsburgh Township. He was a justice of the peace for the Midland District. Mathewson was an Anglican. He died in Pittsburgh Mills.

References

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  • Johnson, J.K. (1989). Becoming Prominent: Leadership in Upper Canada, 1791-1841. ISBN 0-7735-0641-1.