A native of Cap-Chat and the son of Wilfrid Roy, Joseph Sasseville Roy married Hélène, the daughter of Trefflé Baillargeon, in 1920. He ran unsuccessfully in the riding of Abitibi for a seat in the Legislative Assembly of Quebec in 1927 and 1931 as a Quebec Conservative Party candidate. Roy distanced himself from the Conservatives in 1941 after disagreeing with them on the subject of conscription and subsequently joined the "Independent Group" of anti-conscription MPs led by Frédéric Dorion.
A native of Cap-Chat and the son of Wilfrid Roy, Joseph Sasseville Roy married Hélène, the daughter of Trefflé Baillargeon, in 1920. He unsuccessfully ran for a seat in the Legislative Assembly of Quebec in 1927 and 1931 as a Conservative Party candidate from Abitibi. Roy distanced himself from the Conservatives in 1941 after disagreeing with them on conscription and subsequently joined the "Independent Group" of anti-conscription MPs led by Frédéric Dorion.