He belonged to the Udalriching family and was a son of Adrian,[1] who had also held the county of Orléans, and possibly of Waldrada, a Nibelungid. Odo first appears as an imperial legate to the Eastern Saxons in 810, when he was captured by the Wilzi. In 811, as count (comes), according to the Annales Fuldenses, he signed a peace treaty with the Vikings.