Battle of Mortemer

Battle of Mortemer

Depiction of the battle from a 14th Century parchment
Date1054
Location
Result Norman victory
Belligerents
Kingdom of France Duchy of Normandy
Commanders and leaders
Odo of France (POW)
Renaud, Count of Clermont
Guy, Count of Ponthieu (POW)
Waleran of Ponthieu 
Robert, Count of Eu
Hugh of Gournay
Walter Giffard
Roger of Mortemer
William de Warenne

The Battle of Mortemer was a defeat for Henry I of France when he led an army against his vassal, William the Bastard, Duke of Normandy in 1054. William was eventually to become known as William the Conqueror after his successful invasion and conquest of England.