His original name may have been simply Delyan, in which case he assumed the name Petar II upon his accession, commemorating the sainted Emperor Petar I (Petăr I), who had died in 970.
Nama aslinya mungkin hanya Delyan, dalam hal ini ia mengambil nama Petŭr II pada aksesinya, memperingati Kaisar suci Petŭr I, yang meninggal pada tahun 970.