Simplify the following text for a Grade 6 native English-speaking person.
Original: French explorer Jacques Marquette was the first European to reach the Wisconsin River and record its name , arriving in 1673 and calling the river Meskousing in his journal .
Simplified: Jacques Marquette , a French explorer , was the first European ( or person from Europe ) to get to the Wisconsin River and write down the name . He reached the Wisconsin River in 1673 .