Career
He sat for Montarville division in the Senate of Canada from 1915 to 1949. He was born in Outremont, the son of Louis Beaubien and Suzanne Lauretta Stuart. Beaubien was educated at the Collège Sainte-Marie and the Université Laval.
He was admitted to the Quebec bar in 1894.
He was director for several companies including Atlantic Sugar Refineries, Dominion Steel Corporation et Canada Fire Insurance. Beaubien died in office at the age of 78.