By the end of the summer of 1866, several small houses had been built on the shore of Lac Masson, giving rise to what would become the parish of the municipality of Sainte-Marguerite-du-Lac-Masson.
Names of some of the first settlers include: Auguste Laporte, Dominique Chartier Senior, Jean-Baptiste Raymond, Thadée Miron, Léon Lalande, Jean-Baptiste Gauthier, Georges Lefebvre, Théophile Deslauriers, Georges Cardinal, Eusèbe Dorion Senior, André Brisebois, Eusèbe Lajeunesse.
More colonists arrived later in the spring of 1866: Charles Lajeunesse, teacher; Félix Lacasse, blacksmith; Georges Cloutier; Georges Guénette, hotelier; Labrie Carrière and Moïse Charrette.