Pedzisa mutsara unotevera: Zita remusha rinotanga kuoneka mumanyuko ari muzvinyorwa zvechiGiriki zveMiddle Ages zvezana remakore rechinomwe se Στοβων ("Stovon"). Yakadudzwawo muchinyorwa chaMambo weByzantine Basil II kubva muna 1019 mushure mekunge
kukundwa kwoUmambo Hwokutanga hweBulgaria. Kutaurwa kwaro kwokutanga muchiBulgarian chekare kunobva muna 1378, apo rinooneka muRila Charter yeBulgarian Emperor Ivan Shishman se "guta reStob" (). Gwaro racho rinosimbisa kuzvimiririra kweRila Monastery kubva kuStob iri pedyo, pakati pemamwe maropafadzo, uye rinotaura kuti nyika dzeimba yemamongi nezvinhu zvacho zvaiva pedyo neguta racho.