The son of Michel Genthon dit Dauphinais and Victorie Ouellette, he represented St. François Xavier at the 1869 convention and served as vice-president of the Provisional Government under Louis Riel. He was arrested by Garnet Wolseley's troops in 1870.[1]
Dauphinais was married twice: first to Françoise Paul and then, in 1882, to Marguerite Morin.[1]