St. Clement belonged to the closest assistants of the Solun Brothers, Constantine and Methodius (Naum, Angelarius, Sava, Laurentius, Gorazd). He was often called Clement Bulgarian, Ohrid, Macedonian or simply Slavic due to his origin or places where he was active. Together with the Solun brothers he probably participated in the Byzantine mission sent to Kzazars. In the town of Chersoneses, Constantine found the relics of one of the first popes – St. Clement. As an honour to him he may had received this name and used it all his life. He also took the journey to Venice and Rome with Constantine...