Bishop-elect Cyr was born in Saint-Jérôme, Quebec, in 1953 and ordained a priest in 1980. He has been vicar general of the Diocese of Saint-Jérôme since 1994, and earlier was director of formation and vocations as well as serving in two parishes.
He studied theology at the Grand Séminaire de Montréal and at the University of Montreal, spirituality in Florence, Italy, and obtained a license in moral theology from the Académie Alphonsienne in Rome.
Valleyfield has a Catholic population of 185,000 people and is served by 77 diocesan priests, 26 religious order priests, and 10 permanent deacons, in 63 parishes and missions.