Which disinherited son of Charlemagne led a revolt in 792?

Which disinherited son of Charlemagne led a revolt in 792? Pippin the Hunchback led the revolt. He was Charlemagne's eldest son, born around 768 or 769 to the noblewoman Himiltrude, before Charlemagne's later marriage to Hildegard produced several legitimate royal heirs.

Pippin's position became uncertain as Charlemagne's family expanded. Around 780 or 781, Pippin's younger half-brother Carloman was renamed Pippin at baptism, a choice that may have weakened the elder Pippin's dynastic standing. Historians debate whether he was formally disinherited at that point, but his claim to power was clearly more precarious.

In 792, Pippin joined leading Frankish nobles in a conspiracy against his father. The plot was uncovered before it could succeed, and the conspirators were punished. Pippin was spared execution, possibly because he was Charlemagne's first-born son, but he was tonsured and sent to the monastery of Prüm, where he lived as a monk until his death in 811.

A common mix-up is with Pippin of Italy, the younger half-brother formerly named Carloman. That Pippin was Charlemagne's dynastic heir in Italy; Pippin the Hunchback was the elder son associated with the failed 792 revolt.