Childeric III (c. 717 – c. 754) was King of Francia from 743 until he was deposed by Pope Zachary in March 751 at the instigation of Pepin the Short. Although his parentage is uncertain, he is considered the last Frankish king from the Merovingian dynasty. Once Childeric was deposed, Pepin the Short, who was the father of emperor Charlemagne, was crowned the first king of the Franks from the Carolingian dynasty.
After Charles Martel's death in 741, Carloman and Pepin the Short, his sons by his first wife Rotrude, became co-mayors of the palace. However, they soon faced revolts from their younger half-brother Grifo and their brother-in-law Odilo, Duke of Bavaria. These revolts may have played a part in their decision to fill the throne with a Merovingian king after a six-year vacancy to add legitimacy to their reigns.
The Last of the Merovingians, a painting by Evariste-Vital Luminais depicting the cutting of Childeric's hair
Childeric's parentage and his relation to the Merovingian family are uncertain. He may have been either the son of Chilperic II or Theuderic IV.
Childeric took no part in public business, which was directed, as previously, by the mayors of the palace. Once a year, he would be brought in an ox cart led by a peasant and preside at court, giving answers preprepared by the mayors to visiting ambassadors.
After Carloman retired to a monastery in 747, Pepin resolved to take the royal crown for himself. Pepin sent letters to Pope Zachary, asking whether the title of king belonged to the one who had exercised the power or the one with the royal lineage. The pope responded that the real power should have the royal title as well. In early March 751 Childeric was dethroned by Pope Zachary and tonsured. His long hair was the symbol of his dynasty and thus the royal rights or magical powers; by cutting it, they divested him of all royal prerogatives. Once dethroned, he and his son Theuderic were placed in the monastery of Saint-Bertin or he in Saint-Omer and Theuderic in Saint-Wandrille.
There are conflicts in information of when he exactly died with some references citing as early as 753 and other references saying it was as late as 758. Under the Carolingians, he received bad press, being called a rex falsus, false king, despite the fact that it was Pepin through Popes Zachary and Stephen II who raised him to his throne.