NameTassilo I Duke of Bavaria
ChildrenGaribald II
Notes for Tassilo I Duke of Bavaria

Tassilo I (or Tassilon) (560 – 610) was King of Bavaria from 591 to his death. According to Paul the Deacon, he was appointed as Bavarian rex by Childebert II, Frankish king of Austrasia, in 591, ending the war with the Franks. The war began during the reign of Tassilo's predecessor, Garibald I, when Garibald concluded a marriage alliance with the Langobards. We do not know whether Garibald died or was deposed. Nor do we know Tassilo's exact relationship to Garibald, though we can assume Tassilo was a close relation if not his son. The fact that Childebert named Tassilo king shows Frankish control over the Bavarian state.
Paul the Deacon also tells us that Tassilo soon moved into the lands of the Slavs (probably the recently conquered eastern Tyrol and Carinthia), and returned victorious with much plunder. This victory proved to be short-lived as Paul tells us of 2,000 Bavarians, who were slain to a man in 595 when invading the lands of the Slavs to help the Kakan (chief of the Avars).
Tassilo died in 610 and was succeeded by his son Garibald II.
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