Battle of the Lake of Two Mountains National Historic Site of Canada

Battle of the Lake of Two Mountains was designated a National Historic Site of Canada in 1925 because:

• the defeat of a band of Iroquois on this lake in 1689 restored the confidence of the inhabitants of the colony and turned over the Montreal Island.

Following the Lachine Massacre of August 1689, the Iroquois that remained in the area posed a threat to the residents of the Island of Montréal and the surrounding villages. In October, Governor Denonville dispatched a scouting party, composed of 28 “coureurs de bois” under the command of Sieurs Dulhut and d’Ailleboust de Manthet. They encountered a group of 22 Iroquois, resulting in a skirmish at Lac des Deux Montagnes. The French party defeated the Iroquois and reported no casualties, which restored the confidence of the inhabitants of the area.