Boris and Gleb (Old East Slavic: Борисъ и Глѣбъ, Borisŭ i Glěbŭ; Russian: Борис и Глеб, Boris i Gleb; Ukrainian: Борис і Гліб, Borys i Hlib), Christian names Roman and David, respectively (Old East Slavic: Романъ, Давꙑдъ, 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).