Louis Vuillemin (19 December 1879 – 2 April 1929) was a French composer and music critic who strongly identified with his Breton heritage in his music.Vuillemin was born in Nantes, his grandfather was the piano manufacturer M. Didion. He studied cello and composition at the conservatory of Nantes and continued at the Conservatoire de Paris, 1899–1904, with Gabriel Fauré (composition) and Xavier Leroux (harmony).He married young; his wife Lucy was a renowned singer at the time, and he collaborated with her in writing his vocal music. In 1912, he was one of the founding members of the Paris-based Association de Compositeurs Bretons. Drafted to World War I, he was severely wounded in a gas attack which is said to have cut short his life.