After 1664, the only legal code employed in the colony was the Coutume de Paris. Each of Canada's three governments, Québec, Trois-Rivières and Montréal, had its own royal court. The principal law officers of these lower courts were the civil and criminal lieutenant general (royal judge), the special lieutenant (assistant royal judge) and the King's prosecutor. In Québec there was also the Amirauté, a court for judging maritime issues; and the Officialité, the Bishop's court, which heard civil and criminal cases involving members of the Church. Appeals relating to all these courts were heard by the Sovereign Council, the highest court in the colony. Some seigneuries had courts that delivered verdicts on minor cases, and their judgements could be appealed to the royal court of the government under whose jurisdiction they came. After 1713, France began sending new settlers to Île Royale (Cape Breton Island), and the King established lower courts there; appeals to judgements made by these courts were heard by the Superior Council in Louisbourg.

The Administration of Justice
Édit portant établissement de trois bailliages et d'un conseil supérieur à Louisbourg [Edict concerning the establishment of three bailiwicks and a Superior Council in Louisbourg], June 1717
FR CAOM COL B 39 fol. 299vo-302vo