Alexis of Russia
Tsarevna Marfa Alekseyevna of Russia (; 26 August 1652 – 19 June 1707) was a Russian princess, daughter of Tsar Alexis of Russia and Maria Miloslavskaya, sister of Tsar Feodor III of Russia and Tsar Ivan V of Russia and half-sister of Tsar Peter the Great. She participated in the rebellion of her sister Sophia against Tsar Peter in 1698, and was therefore imprisoned in a convent. She is an orthodox saint.