Jacques-René de Brisay de Denonville was the Governor of New Fance in the late 1600s. During the Beaver Wars between the French and the Haudenosaunee, he invaded the land of the Seneca and burned their crops. On his way back to Québec, his army passed through the area that would become Toronto and is thought to have spent a night at the village of Ganatsekwyagon in the Rouge Valley. You can learn more about Denonville and the Beaver Wars here.