Background
Gauthier was born in Deschambault, Quebec and became a physician in 1921 after studies at Collège de Sainte-Anne-de-la-Pérade of the Séminaire de Québec then at Université Laval.
Gauthier was born in Deschambault, Quebec and became a physician in 1921 after studies at Collège de Sainte-Anne-de-la-Pérade of the Séminaire de Québec then at Université Laval.
He was re-elected to the Legislative Assembly of Quebec in the 1931 general election, then defeated in 1935. He was provincial Liberal party whip from 1931 to 1935. He was re-elected there in 1940.
In 1941 and 1942, he served as a captain in the Royal Canadian Army Medical Corps.
Gauthier returned to the federal Liberals and was re-elected to Parliament in 1945. He was re-elected for further federal terms in 1949, 1953 and 1957.
He was defeated in 1958 by Aristide Rompré of the Progressive Conservative party.
He entered provincial politics under the Quebec Liberal Party after winning a provincial by-election in Portneuf electoral district on 31 October 1927. In 1943, he left the federal Liberals to join the Bloc populaire party which was opposed to World World War II conscription.