Matthew Alexander Henson was an American explorer who accompanied Robert Peary on seven voyages to the Arctic over a period of nearly 23 years. They spent a total of 18 years on expeditions together. He is best known for his participation in the 1908–1909 expedition that claimed to have reached the geographic North Pole on April 6, 1909. Henson later said that he was the first of their party to reach the North Pole.