[4] Theodosius was born in the late 18th century in the town of Dojran, Ottoman Empire (today in North Macedonia).
After he had finished Greek language school in Istanbul, Teohar went back to Dojran, where he got married and was later ordained a priest.
In 1828 Teohar became a monk in Saint Catherine's Monastery and there he adopted the monastic name Teodosiues (Theodosiy in Bulgarian).
The first books, typed in Teodosius's printing house, were "Primary study through Slavonic-Bulgarian and Greek Orthodox morning prayers" („Началное учение с молитви утренния славяноболгарский и греческия“) and "Jewish ceremony and all of the harms, they've done" - an anti-Semitic lampoon, which was initially translated "to simple and plain Bulgarian language" by Nathanael Ohridski.
Nine years after Theodosius' death, the brothers Kiryak and Konstantin Darzhilovi opened a new Bulgarian language printing press in Thessaloniki.