Conflicts & Resolutions · Battle

Battle of Mortemer

1054 · 11th century

The Battle of Mortemer was fought in February 1054 in upper Normandy, when forces of Duke William of Normandy surprised and destroyed one of two French armies that King Henry I of France had sent to invade the duchy. The other army withdrew on hearing of the defeat. The victory strengthened William's hold on Normandy against his overlord.

Battle of Mortemer
Image: Chroniques de Saint-Denis · Public domain · Wikimedia Commons

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Duchy of NormandyMilitary

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Cite this entry
APA
The Epoch Institute. (2026). Battle of Mortemer. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/battle-of-mortemer
MLA
“Battle of Mortemer.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/battle-of-mortemer. Accessed .
Chicago
The Epoch Institute. “Battle of Mortemer.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/battle-of-mortemer.
Harvard
The Epoch Institute (2026) ‘Battle of Mortemer’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/battle-of-mortemer (Accessed: ).

Last reviewed October 2026Random entry ↻