The Cathedral of Saint-Jean-l'Évangéliste (St. John the Evangelist) is the seat of the Roman Catholic Diocese of Saint-Jean-Longueuil in Canada.
The cathedral was founded as a parish church in 1828 to serve the people of the region, who until then had to cross the Iroquois River for religious services in Montreal, some 50 km (30 miles) away.
[1] Given the increased commerce on the river and the incorporation of the town in the 1850s, it was decided to build a larger and grander structure.
[1] The region was separated from the Archdiocese of Montreal in June 1933, and established as the new Diocese of Saint-Jean-de-Québec.
The Church of Saint-Antoine-de-Padoue (St. Anthony of Padua) was designated a co-cathedral to serve the northern sector of the diocese.