Anatole DEMIDOFF (1812-1870) Russian diplomat, husband of Princess Mathilde. Partly autograph letter, December 26, 1830, to Baron de Spies; 1page in-8 partly printed with his name Anatole de Demidoff and crown, address. Printed invitation with 7 autographed lines, inviting Baron de Spies to dinner, asking him to return "the letter I wrote yesterday to my brother and which contained that of Fossombroni".