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Thuringia, (Frankish) Duchy of
The Duchy of Thuringia is an eastern frontier march of the Merovingian kingdom of Austrasia, established by Dagobert I after his victory over the Slavic confederation of Samo at the Battle of Wogastisburg in 631/2.
It was recreated in the Carolingian empire, and its dukes appointed by the king until it was absorbed into Saxony in 908.
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