Jacques-René de Brisay de Denonville was the Governor of New Fance in the late 1600s. He is most famous for his role in the Beaver Wars between the French and the Haudenosaunee (who the French called "the Iroquois"). In 1687, he invaded the land of the Seneca and burned millions of bushels of corn, leaving many to starve to death that winter. On his way back to Québec, he and his army passed through the area that would eventually become Toronto; they are thought to have spent a night at the village of Ganatsekwyagon in the Rouge Valley. You can learn more about Denonville from Wikipedia here.