The Gesta Dagoberti ('Deeds of Dagobert'), fully Gesta domni Dagoberti regis Francorum ('Deeds of Lord Dagobert, King of the Franks'), is an anonymous Latin biography of Dagobert I, king of the Franks (623–639). It combines deeds from the life of Dagobert with numerous accounts of miracles to present Dagobert as a saint and the founder of the Abbey of Saint-Denis. It was written in the early 9th century. As a historical source, it is "extremely unreliable", but not totally useless.