Troubetzkoy, Paul, Prince (trōbĕtskoiˈ, trōbĕtsˈkoi, Rus. trōbyĭtskoiˈ) [key], 1866–1938, Russian sculptor, b. Italy. The son of a Russian nobleman and an American woman, Troubetzkoy worked in Russia, France, Italy, and the United States. His sculpture was influenced by the impressionism of Rodin. Troubetzkoy's finest portraits and animal sculptures date from the early 1900s. Among his illustrious sitters were Tolstoy, Rodin, Anatole France, and George Bernard Shaw. An equestrian portrait is in the Detroit Institute of Arts, and other works are in many major collections.