Vladimir II Monomakh

Vladimir II Monomakh (Old East Slavic: Володимѣръ Мономахъ, romanized: Volodiměrŭ Monomakhŭ; Christian name: Basil (Васи́лий); 26 May 1053 – 19 May 1125) was Grand Prince of Kiev from 1113 to 1125. Prince Monomakh distinguished himself in 83 large-scale campaigns into Polovtsian lands (Cumania), which made Polovtsians (Cumans) and their Khans fear him. He is considered a saint in the Eastern Orthodox Church and is commemorated on May 6, along with 122 other saints of Ukraine and Russia as well as Saint Andrew. He is not to be confused with Saint Vladimir the Great.

Source: Wikipedia — https://en.wikipedia.org/wiki/Vladimir_II_Monomakh