Dagobert II (Latin: Dagober(c)tus; Old English: Dægberht; died 679) was the 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.