FranceHistories

830–835: Civil War Between Louis and His Sons

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Louis the Pious: The Empire Put to the Test (814–840) · EARLY MIDDLE AGES

Between 830 and 835, Louis the Pious’s reign is dominated by a sequence of coups, negotiations, and shifting alliances. The central issue is succession: what division is acceptable, and who controls the empire?

🧾 830: first coup

In 830, Pepin and Louis seize the imperial palace and the emperor. They impose the removal of Judith (sent to a monastery) and entrust Charles to monks. Bernard of Septimania flees and takes refuge in his southern domains.

Lothair, returned from Italy, keeps his father on the throne, but under his surveillance as associated emperor.

🗺️ 830–831: Nijmegen and the four‑part division

Louis obtains the support of German bishops and opens negotiations with Pepin and Louis, who eventually break with Lothair. At the assembly of Nijmegen (830), Lothair agrees to return to Italy.

Louis then challenges the 817 balance and prepares a new division, formalised in 831:

  • Lothair keeps Italy and the imperial title (until his death)
  • the rest of the empire is distributed among Pepin, Louis, and Charles, with the idea that these kingdoms will become independent after Lothair

🧨 832: Aquitaine confiscated

The crisis continues. At the assembly of October 832 at the palace of Jocundiacum (near Limoges), Louis confiscates Pepin’s domains and has Charles the Bald acclaimed in Aquitaine as a promise of a future Aquitanian throne.

🏟️ 833: the “Field of Lies” and deposition

In June 833, Lothair returns at the head of an army, accompanied by Pope Gregory IV, and joins his brothers against their father. On the “Field of Lies”, Louis’s supporters abandon him one after another. Judith is taken to Italy and Charles is placed in the monastery of Prüm.

In November 833, at Soissons, Louis undergoes a public penance and must renounce imperial dignity.

🔁 834–835: overturning the overturning

Lothair cannot satisfy his brothers durably. A new coalition forms against him; he is forced to return to Italy. In 835, Louis recovers his imperial title at the council of Thionville.

🧠 Key takeaways

  • Carolingian civil war is a succession crisis, but also a crisis of loyalties.
  • Assemblies (Nijmegen, Jocundiacum) matter as much as battles.
  • Papal involvement (833) shows how religious arbitration weighs on imperial politics.