Sinnion (Synion) was Hunno-Bulgar leader from 551 into the 550s, who had once served under Belisarius in the Vandal campaigns. Sinnion led 2000 of Kutrigur Huns who were defeated. He led a group of 600 Massagetæ Huns in the Belisarius invasion of 533. Under Sinnion, 2000 Bulgars were settled in Thrace by Justinian I. Following on his heels in history, a complex dynamic involving Justinian I, Sandilch, Zabergan, Kandik and Sarosios ensued.
- Bury, John Bagnell (1958). History of the later Roman Empire from the death of Theodosius I. to the death of Justinian, Volume 2. Dover Publications. p. 303.
- Syvänne, Ilkka (2004). The Age of Hippotoxotai: Art of War in Roman Military Revival and Disaster (491-636). Tampere University Press. ISBN 9789514459184.
- Martindale, John Robert (1971). The Prosopography of the Later Roman Empire, Volume 3. Cambridge University Press. p. 169. ISBN 9780521201605.
|Ruler in Onoguria||Succeeded by
Pseudo-Avar Kagan Kandik
Utigur Khan Sandilch
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