948–949: The \"Trial\" of Hugh the Great

After the king’s captivity, Louis IV seeks a weapon Hugh the Great does not fully control: the Church, its councils, and its sanctions.

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⛪ 948: Ingelheim, excommunication as a verdict

Between 947 and 948, several synods meet between the Meuse and the Rhine under Otto I’s impulse. At the Council of Ingelheim (June 948), Louis presents grievances against Hugh the Great: the duke is accused of attacking royal power, notably by having the king captured.

The sentence targets legitimacy: Hugh is threatened with excommunication if he refuses to appear and to make amends.

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🔥 The response: raids, profanations, fortresses

Hugh ignores the sentence and pursues a policy of force: devastations, pressure on Reims’s possessions, profanations of churches. His network also acts: Theobald of Blois (“the Trickster”) strengthens positions, builds a fortress at Montaigu, and seizes Coucy on Reims lands.

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🏛️ 949: settle sees, retake places

Synods continue the offensive: excommunication reaches some bishops installed by the opposing camp. The king, supported by allies, then tries to retake positions (Amiens, Laon) and restore an ecclesiastical hierarchy favourable to him.

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🧠 Key takeaways

• The “trial” is a battle of legitimacy, not a modern courtroom process.
• Councils and excommunication are political weapons.
• Princes’ war is also fought through bishoprics and fortresses.