he detested. During a military campaign in 730, Lantfrid was killed and Theudebald became sole duke. In 732, Theudebald was chased out of Alemannia by Charles Martel, but upon Charles' death in 741 he returned to claim his dukedom.

In 742, Theudebald rebelled against the nominal authority of the Merovingian monarchy which was then being exercised by the two mayors of the palace Pepin the Short