Camulus

In Celtic mythology, Camulus or Camulos was the god of war of the Remi, a Celtic tribe, who lived in the area of today's Belgium. Traces of his cult are also found in Britain. The town Camulodunum (now Colchester) in Essex, was named after him and was the basis for the legendary city Camelot. The Romans identified Camulus with Mars, their god of war.
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[Celtic] A Gaulish war god mentioned by the Romans, who associated them with Mars. He gave his name to the Roman town of Camulodunum (Colchester).