Oath of Strasbourg
French history
Quick Summary
The Oath of Strasbourg, taken in 842 CE, was a pivotal moment in early French history. It marked an alliance between Charles II (the Bald), king of the West Franks, and Louis II (the German), king of the East Franks. This oath was sworn in the city of Strasbourg and is significant because it is the oldest surviving written document in Old French. The alliance was formed against their half-brother, Emperor Lothar I, and was a precursor to the Treaty of Verdun in 843, which partitioned the Carolingian Empire.12
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