Drogo (born c. 730) was a Frankish nobleman of the Pippinid family and the eldest son of Carloman, mayor of the palace of Austrasia under the Merovingian king Childeric III. He succeeded to his father's office in 747, but was soon squeezed out of power by his uncle, Pippin III, the mayor in Neustria. He resisted his uncle's takeover, but in 753 was captured and forced to become a monk. Mayor in Austrasia, 747 – c.751 Carloman seems to have named his son after his own uncle, Duke Drogo of Champagne, the eldest son of Pippin II. The name of Drogo's mother is not known. He was of majority age when he witnessed a charter issued by his father in August 747. At the time Drogo was the heir of both his father and his uncle. Around October that year, his father abdicated his mayoralty, went on a pilgrimage to Rome and entered the monastery of Monte Cassino. Drogo succeeded his father in Austrasia and in rule over Alemannia and Thuringia. This fact was obscured by later chroniclers, like Einhard and the anonymous compiler of the Annals of Metz, neither of whom mention Drogo. They sought to create a simplified Pippinid family tree so as to make the position of Pippin III, founder of the Carolingian dynasty, appear stronger than it was. At the time Carloman left on his pilgrimage, Drogo's position must have been strong. The Chronicle of Fredegar claims, misleadingly, that Carloman entrusted both Austrasia and Drogo to Pippin's care. The main piece of evidence that Drogo actually succeeded to his father's office is a short anonymous letter preserved in the collection of Saint Boniface's letters. The letter writer asks a certain Andhemus "whether he [Boniface] has gone to the synod of the duke of the western provinces [Pippin] or to the son of Carloman [Drogo]." No answer to the letter is known, but it is known that Boniface sided with Pippin. Historian Roger Collins notes that "given a choice in 747 between Pippin and his nephew, for Boniface to favour the already proven western ruler over the young and inexperienced eastern one [made] pragmatic sense." It is not known for how long Drogo exercised mayoral authority in Austrasia. The birth of a son, Charles, to his uncle on 2 April 748 seems to have fundamentally altered the relationship between Drogo and Pippin. Soon after Pippin released his