Presian I of Bulgaria

Presian Пресиян І
Khan of Bulgaria
Presian Inscription, first plate, Archeological Museum, Philippi, Greece.
Reign	836–852
Predecessor	Malamir
Successor	Boris I
Died	852
Spouse	Unknown
Issue	Boris I
House	Krum's dynasty
Father	Zvinica

Presian (Bulgarian: Пресиян, Персиян, Пресиан) was the Khan of Bulgaria from 836–852. He ruled during an extensive expansion in Macedonia.

The composite picture of the Byzantine sources indicates that Presian I was the son of Zvinica (Zbēnitzēs), who was a son of Omurtag. In several older studies Presian is identified with his short-lived predecessor Malamir and it is assumed that this single character survived until the 850s as the direct predecessor of Boris I. This is very unlikely, as Malamir is attested as having been succeeded by his nephew (the son of his brother Zvinica), while Boris I was preceded by his father Presian. Zlatarski resolved the problems in the fragmentary sources by determining that Malamir's unnamed nephew and successor was in fact Presian, and Boris I was the latter's son.

The 17th century Volga Bulgar compilation Ja'far Tarikh, a work of disputed authenticity, represents Birdžihan (i.e., Presian) as the son of Sabanša (i.e., Zvinica), which may lend support to the interpretation of his origins now dominant in Bulgarian historiography.

Presian may have been young and inexperienced at the time of his accession, and state affairs may have been dominated by the minister (Kavkhan) Isbul, as under Presian's uncle Malamir. Soon after Presian's accession the Slavs in the vicinity of Thessalonica rebelled against the Byzantine Empire in 837. Emperor Theophilos sought Bulgarian support in putting down the rebellion, but simultaneously arranged for his fleet to sail through the Danube delta and undertake a clandestine evacuation of some of the Byzantine captives settled in trans-Danubian Bulgaria by Krum and Omurtag.