Born in Quebec City, Prevost studied town planning at L'Ecole des Beaux-Arts Montreal (1949), and is self-taught in painting. He is influenced by Jean Paul Lemieux, and Benoit East. Working in oil and watercolour, his early detailed paintings are charaterized by tiny brushstrokes. He is however, best known for his somewhat surreal, simplified, faceless conical figures in winter settings. He established and administered the historic village of Jacques de Chambly (1960-1971). He turned to painting full-time in 1971 and moved to Norton, New Brunswick in 1984. His silkscreen illustations were published in "Mon Oncle Antoine" by Claude Jutra and "Septuor Maritime" by Gilles Vigneault