Career
He was esquire, midshipman, and councillor in the Conseil Souverain. He was the son of Pierre Legardeur de Repentigny and Marie Favery. He became associated with the fur trade at an early age.
On October 6, 1663, he was elected the first mayor of Quebec City.
He occupied this office for only one month, since the Conseil Souverain considered it unnecessary. He received from his mother the seigneury of Repentigny on May 2, 1670, which had been granted by the Compagnie de la Nouvelle France in 1647 to his father.