"Pepin I or Pepin I of Aquitaine (French: Pépin; 797 – 13 December 838) was King of Aquitaine and Duke of Maine.
Pepin was the second son of Emperor Louis the Pious and his first wife, Ermengarde of Hesbaye. When his father assigned to each of his sons a kingdom (within the Empire) in August 817, he received Aquitaine, which had been Louis's own subkingdom during his father Charlemagne's reign. Ermoldus Nigellus was his court poet and accompanied him on a campaign into Brittany in 824.
Pepin rebelled in 830 at the insistence of his brother Lothair's advisor Wala. He took an army of Gascons with him and marched all the way to Paris, with the support of the Neustrians. His father marched back from a campaign in Brittany all the way to Compiègne, where Pepin surrounded his forces and captured him. The rebellion, however, broke up." - (en.wikipedia.org 11.08.2021)
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