Bulgar language

extinct Oghur Turkic language

short medieval chronicle, containing the names and lineage of proto-Bulgarian rulers

The Ichirgu-boila or Chargobilya (; Old Bulgarian: , ) was a high-ranking official in the First Bulgarian Empire. The holder of the post was the commander of the garrison of the capital and was the third most important person in the state after the ruler and the Kavkhan. In peace-time the ichirgu-boila had diplomatic functions. According to some data the ichirgu-boila personally commanded a squad of 400 heavy cavalrymen.

Kanasubigi (), possibly read as Kanas Ubigi or Kana Subigi, was a title of the early Bulgar rulers of the First Bulgarian Empire. Omurtag (814–831) and his son Malamir (831–836) are mentioned in inscriptions as Kanasubigi.

solar calendar system used by the Bulgars