Ernest Guérin was a student of Lafont and Ronsin at the Beaux-Arts in Rennes. He exhibited in Paris at the Salon des Artistes Français, of which he became a member and was a member of the South Wales Society. He also exhibited at the Royal Cambrian Academy. In 1905 he was awarded a silver-gilt medal at the École des Beaux-Arts, and in 1907 the medal of excellence. Painter and illuminator, spokesperson for the Bretons, the sea, the Country and its legends. Anatole Le Braz saw in him the interpreter of Brittany penetrated by the poetry of "the past". An original artist, he practiced gouache, watercolor, and illumination with equal pleasure and participated in numerous Salons. Very quickly his reputation grew, through the character of his work which depicts the customs of Breton peasants, the traditional religious festivals, and the wild character of Brittany through its landscapes, its climate and its atmospheres. Ernest Guérin's landscapes reflect an art inspired by Japanese and Chinese works, mixing small characters lost in a nebulous landscape which occupies the entire composition.