Princess Catherine Radziwill, (30 March 1858 – 12 May 1941) was a Polish-Russian aristocrat. Born in Russia into the Polish-Lithuanian House of Rzewuski. She was a prominent figure at the Imperial courts in Germany and Russia, but became involved in a series of scandals. She combined her love for the luxury of the courts, social life, gossip and intrigue with her literary talent and she wrote two dozen books on European royalty and the Russian court.