Catherine, secular name Yevgeniya Borisovna Yefimovskaya (born 28 August 1850 in Smolensk, died 15 October 1925 in the Novo Hopovo Monastery on Fruška Gora), was a Russian Orthodox nun and the founder of the Nativity of the Mother of God Monastery in Leśna. She is known for her concept of an active women's monastery within the Russian Orthodox Church. Coming from a deeply religious aristocratic family, she obtained a university education in Russian language and literature and worked as a teacher at a model Orthodox school. Influenced by Slavophile ideas, she became an Orthodox nun, combining a