He was born in Quebec City, the son of Antoine Franchère and Marie-Josette Nicolas. Franchère was a captain in the militia during the War of 1812. He was first elected to the assembly in April 1820 and defeated by John Jones in the election that followed in July of the same year. The results of that election were subsequently declared invalid and Franchère was elected in a by-election held in 1822. He did not run for reelection in 1824.