Marquette, Jacques
From Longman Dictionary of Contemporary EnglishMarquette, JacquesJacques MarquetteMar‧quette, Jacques /mɑːˈket $ mɑːr-, ʒæk $ ʒɑːk/ (1637–75) a French missionary (=someone who goes to a foreign country to teach people about Christianity), and explorer in North America. He and Louis Joliet were the first Europeans to discover the Mississippi River.