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Dagobert II (Latin: Dagober(c)tus; Old English: Dægberht; died 679) was a Merovingian king of the Franks, ruling in Austrasia from 675 or 676 until his death. He is one of the more obscure Merovingians. He has been considered a martyr since at least the ninth century. The only near-contemporary assessment of Dagobert's character portrays him as a tyrant. He antagonized the bishops and imposed new taxes. He was assassinated by a conspiracy of the highest nobility. He was succeeded by his cousin, Theuderic III, king of Neustria, against whom he had previously warred.