Career
He represented Surrey in the Legislative Assembly of Lower Canada from 1804 to 1805. He was born in Ste. Genevieve, Missouri, the son of Philippe-François de Rastel de Rocheblave and Marie-Michelle Dufresne, and settled in Montreal, where he became a trader. He died in office in Montreal at the age of 37 from injuries received on a ship during a storm on Lake Champlain.
De Rastel de Rocheblave had been discussing trade on the Missouri River with American authorities.
He was the brother of Pierre de Rastel de Rocheblave.