Pepin of Aquitaine's Reconciliation and the Restoration of Louis the Pious (834)

By 834, the rebellion that had deposed Louis the Pious in 833 at the Field of Lies begins to fracture, as Lothair I's ambitions alienate his allies, particularly his brother Pepin of Aquitaine.

Pepin Turns Against Lothair

• Initially, Pepin had joined Lothair and Louis the German in rebellion against their father.
• However, Lothair’s growing power and apparent disregard for his brothers’ interests leads Pepin to abandon the coalition.
• Seeing an opportunity for reconciliation, Pepin shifts his allegiance back to Louis the Pious and joins him in his restoration campaign.

The Restoration of Louis the Pious (March 1, 834)

• With support from Pepin of Aquitaine and other loyalists, Louis the Pious is reinstated as emperor on March 1, 834.
• Pepin is fully restored to his former status, reaffirming his control over Aquitaine.
• Lothair I, now isolated, is forced to flee as the empire momentarily returns to stability.

Aftermath and the Continued Struggle for the Carolingian Empire

Although Pepin and Louis the Pious are reconciled, the empire remains fragile, with tensions between the emperor’s sons continuing:

• Lothair retreats but remains a threat, particularly after Louis' death in 840.
• The division of the empire is now inevitable, culminating in the Treaty of Verdun (843), which permanently splits Charlemagne’s empire among his grandsons.

Pepin’s temporary realignment with his father in 834 highlights the shifting alliances that characterize the later Carolingian period, as dynastic rivalries reshape medieval Europe.