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Sir John Johnson House National Historic Site

19692 William Street, Williamstown, ON K0C 2J0

Sir John Johnson, a Loyalist leader, helped resettle refugees in Ontario after the American Revolution. Between 1784 and 1792, he built a home and mills along the Raisin River—one of Ontario’s oldest surviving residences and a symbol of early settlement.

Historic Raisin River home of Loyalist Sir John Johnson, showcasing early Ontario settlement and heritage.

Updated · Mis à jour May 7, 2026

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