Monaco  and  Duke of Valentinois  from 27 June 1922 until 9 May 1949. While stationed in  Algeria , he met  Marie Juliette Louvet  (1867–1930), a  cabaret   singer .    (Juliette was already the mother of two children, Georges and Marguerite, by her former husband, French "girlie" photographer  Achille Delmaet .)