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Charles Martel (686–741) was an illegitimate son of Pepin of Herstal, and therefore indeed a "free man", but not of noble rank. After his victory at the Battle of Soissons (718), Charles Martel styled himself Duke of the Franks. Charles' eldest son was named Carloman (c. 710–754), a rare example of the element "carl-" occurring in a compound name.