the Holy Passion-Bearers, Princes of Russia Boris and Gleb, -- in Holy Baptism Roman and David", St. Luke the Evangelist Orthodox Church 10th-century births 1010s deaths 11th-century Christian martyrs 11th-century Christian saints 11th-century princes in Kievan Rus' Rurik dynasty Murdered royalty Murdered Russian royalty Passion bearers Russian saints Ukrainian saints Children of Vladimir the Great Sibling duos Russian people of Bulgarian descent