817: Ordinatio Imperii, Hierarchy of Heirs

In 817, Louis the Pious tries to solve the most explosive question of imperial politics: succession. Frankish tradition tends to divide among heirs, but an empire cannot survive if it is endlessly fragmented.

---

📜 A text to preserve unity

The Ordinatio Imperii sets out a hierarchy:

• Lothair becomes co‑emperor and principal heir, supposed to preserve unity.
• Pepin receives Aquitaine.
• Louis (future Louis the German) receives Bavaria.

The younger kings are not independent: they are meant to remain subordinate to the emperor.

---

🧨 A fragile balance

The plan is coherent, but it depends on obedience and on a stable family situation. The later birth of Charles (future Charles the Bald), son of Judith, breaks the balance and turns the Ordinatio into a source of conflict.

---

🧠 Key takeaways

• 817 is an attempt to keep the empire united while giving heirs real power.
• The hierarchy of heirs creates a legal frame, but dynastic rivalries undermine it.