Early reports stated that DuBois fought alongside Lafayette in 1777 but more recent research seems to indicate that he only arrived in Vincennes after the war of Independence.
After the early death of Jeannette, Toussaint DuBois married Jane Baird in 1805.
As a captain, DuBois commanded the Company of Spies and Guides of the Indiana militia at the 1811 Battle of Tippecanoe.
He also served as a Major in the War of 1812, commanding the Kentucky Mounted Spies.
[2] DuBois drowned in 1816 while crossing the Little Wabash River in Illinois, when he was returning from business in St. Louis, Missouri.