The Ordre de Jacques-Cartier (OJC), commonly known as “La Patente,” was a secret society founded in 1926 in Vanier (now Ottawa), Ontario, to further the religious, social and economic interests of French Canadians. At the forefront of the conflicts over language and nationalism until the 1960s, it discreetly wielded its influence by infiltrating various associations, and it mobilized its members within a strict authoritarian structure. The rise of Québécois nationalism and internal tensions led to its dissolution in 1965.