In 1830, at the age of forty, Jean-Claude Colin accepted the call of his colleagues to take charge of the Society of Mary (Marists). He had joined this project as a seminarian in Lyons, France, in 1816, along with Marcellin Champagnat, future founder of the Marist teaching brothers. Since ordination, he had been an assistant priest at Cerdon (photo below), preached revival missions in rural districts and been principal of a high school-seminary.