Pepin, or Pippin the Hunchback was a Frankish prince. He was the eldest son of Charlemagne and noblewoman Himiltrude. He developed a humped back after birth, leading early medieval historians to give him the epithet "hunchback". He lived with his father's court after Charlemagne dismissed his mother and took another wife, Hildegard. Around 781, Pepin's half brother Carloman was rechristened as "Pepin of Italy"—a step that may have signaled Charlemagne's decision to disinherit the elder Pepin, for a variety of possible reasons. In 792, Pepin the Hunchback revolted against his father with a group of leading Frankish nobles, but the plot was discovered and put down before the conspiracy could put it into action. Charlemagne commuted Pepin's death sentence, having him tonsured and exiled to the monastery of Prüm instead. Since his death in 811, Pepin has been the subject of numerous works of historical fiction.

Charlemagne was King of the Franks from 768, King of the Lombards from 774, and Emperor of what is now known as the Carolingian Empire from 800, holding all these titles until his death in 814. Charlemagne succeeded in uniting the majority of Western Central Europe, and was the first recognized emperor to rule in the west after the fall of the Western Roman Empire approximately three centuries earlier. Charlemagne's rule saw a program of political and social changes that had a lasting impact on Europe in the Middle Ages.