Answer:
Charles Martel was Mayor of the Palace of the kingdom of Austrasia from the year 715 until his death in 741.
He is best remembered for having won the Battle of Poitiers in 732, traditionally considered the action that saved Europe from the Muslim expansionism that had already conquered the Iberian Peninsula; since then there were no Muslim invasions in the Frankish territories, and the victory of Charles Martel is considered decisive for medieval history in that it contained the Islamic expansion in the free borders.