Trudpert was a seventh-century missionary, often identified as a Celtic monk from Ireland, who worked within the territory of the Alamanni. After obtaining papal approval for his mission, he traveled the Rhine to the Breisgau region. There, he established a hermitage and a small oratory on land provided by a local nobleman named Otbert. He lived an ascetic life, clearing forests to build his cell, and is remembered for his religious efforts in what is now the Black Forest.