[1] He was born on June 28, 1927, near Lac-Mégantic, Quebec, and made a career in education.
Grenier ran as a Union Nationale and won a seat to the Legislative Assembly of Quebec in the 1966 provincial election in the district of Frontenac.
Grenier resigned his seat and ran as a Progressive Conservative candidate in the district of Mégantic-Compton-Stanstead in the 1980 federal election.
After the defeat, Grenier attempted to win back his seat to the National Assembly of Quebec, but finished third.
This article about a Member of the National Assembly of Quebec from the Union Nationale is a stub.