Boris and Gleb
Boris and Gleb (, "Borisŭ i Glěbŭ"; , "Boris i Gleb"; , "Borys i Hlib"), Christian names Roman and David, respectively (, "Romanŭ, Davydŭ"), were the first saints canonized in Kievan Rus' after the Christianization of the country. Their feast day is observed on July 24 (August 6).