911: Lotharingia Under Charles the Simple

In 911, Lotharingia shifts toward Charles the Simple. This territory, inherited from Carolingian partitions, is a border space: between West and East, between rival aristocratic networks, and between powerful bishoprics.

---

🗳️ After Louis the Child: a political choice

When Louis the Child dies (21 November 911), Lotharingian elites refuse the new eastern power and turn to Charles. Major figures such as Reginar Longneck and the count palatine Wigeric drive this decision: Lotharingia offers itself to the Carolingian, who accepts this form of election and reorients part of his reign eastward.

---

🏛️ A political gain… and a source of tensions

For Charles, this is a prestige boost: West Francia regains depth in the East. But governing Lotharingia requires:

• negotiating with local elites;
• distributing honores and offices;
• constant arbitration among great men.

Each decision can create discontent elsewhere in the kingdom.

---

🏷️ “Rex Francorum”: a title that matters

In 911–912, Charles revives the title rex Francorum. The stake goes beyond formula: western kingship claims continuity with the “kingdom of the Franks”, tied to symbolic places (Reims, Paris). This claim persists later, including among the Robertians, while it becomes more sporadic in the East.

---

🧑‍⚖️ A Lotharingian government… that angers the West

Charles relies on Lotharingian networks, notably linked to Frederuna, and grants honores to relatives and loyal men to counterbalance West Frankish princes, including his cousin Haganon.

From 914, the chancellery is dominated by Lotharingians: Gauzlin of Toul (914–919), then Haganon. This orientation fuels resistance, especially when heirs of early dignitaries try to build their own principalities.

---

⚔️ Giselbert and the impossible balance

A prince like Giselbert acts confidently, supported by his friendship with the Saxon king Henry the Fowler. Lotharingia strengthens Charles’s prestige but weakens his coalition: the East becomes a political energy centre… feeding crisis in the West.

---

🤝 920–921: from Pfeddersheim to the Treaty of Bonn

Trying to hold Lotharingia, Charles clashes with the rulers of Germania. Defeated at Pfeddersheim (920) by Henry the Fowler, he then must stabilise relations. On 7 November 921, the Treaty of Bonn establishes mutual recognition: a diplomatic compromise provisionally fixing balance between West and East.

---

🧩 A lesson in “negotiated” kingship

The episode illustrates a typical early‑10th‑century phenomenon: the king may extend his sphere, but real authority depends on the ability to hold a coalition, region by region.

---

🧠 Key takeaways

• 911: Lotharingia strengthens the king’s reach.
• The gain also increases governing complexity.
• Authority plays out in alliances more than in borders.