Complex sentence: Here in Illinois, Martin Chartier lived with the Shawnee in Illinois on the Wabash River, and in 1675, Martin Chartier weds Sewatha Straight Tail, his Shawnee wife.
Split into simpler sentences: Here in Illinois, Martin Chartier lived with the Shawnee in Illinois on the Wabash River. In 1675, Martin Chartier weds Sewatha, his Shawnee wife.