Proper noun
English Wikipedia has an article on:Asparukh of BulgariaWikipedia
Asparukh
the name of а ruler of Bulgars in the second half of the 7th century AD
Given names have many variations, but the most common names have Christian/Greek (e.g. Maria, Ivan, Christo, Peter, Pavel), Slavic (Ognyan, Miroslav, Tihomir) or Protobulgarian (Krum, Asparukh) (pre-Christian) origin. Source: Internet
After this, having made Bayan a subject, they forced him to pay tribute''.sfn Asparukh, according to the Pseudo–Zacharias Rhetor, "fled from the Khazars out of the Bulgarian mountains". Source: Internet