The name Radyslav is derived from the Slavic verb "to advise" and the noun "glory." The first mention of the personal name Radyslav appears in the chronicle of 1166. One of the Cossacks bearing this name was Radyslav Muntyanych, who is mentioned among the Zaporozhians in 1649, being a Cossack of the Bila Tserkva regiment.In Lutsk, the masculine name Radyslav began to be given to children again at the end of the 20th century. The name Radyslav was also popular among Serbs and Bulgarians. It is referenced in the well-known name dictionary "Slavic Namebook" by M. Moroshkin. In Galicia, an oikonym "Radyslavychi" has been preserved and recorded since 1578.Thus, the name Radyslav has a long and multifaceted history, indicating its popularity and prevalence in various regions of Slavic lands.