The Battle of Beauharnois was fought on November 10, 1838, between Lower Canada loyalists and Patriote rebels, after 500 armed men had converged on Beauharnois, on November 3–4, overtaking the seigneurial manor.

Edward Ellice, private secretary to John Lambton, 1st Earl of Durham, had then been in residence for several months.

[3][4] The town rose up, following a series of raids by rebel leaders who had escaped into the United States.

François-Marie-Thomas Chevalier de Lorimier commanded the ranks of the Patriote rebels.

[7][8] Government forces burned several buildings in the area in reprisal for the rebels’ actions.