Dagobert II was a Merovingian king of the Franks who governed Austrasia from approximately 675 until his assassination in 679. Following the death of his father, Sigebert III, he was removed from the line of succession and sent to live as a monk in Ireland. He later returned to reclaim his throne during a period of civil war. His brief rule was marked by conflicts with Neustria, a peace treaty with the Lombards, and the reintroduction of gold coinage.