He was born in
Juigné-sur-Sarthe, the youngest son of
Antoine de Castellane and a member of the
House of Castellane. His elder brother was
Boni de Castellane. He studied at the
Paris Institute of Political Studies and entered politics at a young age, being elected to the
Chamber of Deputies as a representative of Cantal in 1902, when he was 27. He lost his seat in 1906, was reelected in 1919 and again in 1928. Between 1930 and 1932 he was vice-president of the Chamber. On 10 July 1940, he voted in favour of handing over full powers to
Marshal Pétain. Because of this, after the
Liberation, he was declared ineligible and could not seek another parliamentary mandate. In 1901 he married Natalia Terry y Sanchez (1877-1962), the sister of architect
Emilio Terry, and had two sons: Henri (1903-1937) and François (1908-1988). After the war he withdrew from public life and died on 4 July 1959 in Paris, age 84. == References ==