This is one of the graves of soldiers and patriots of the American Revolution at the Old Cathedral “French and Indian” Cemetery in Vincennes, Indiana.
I did a bit of research and found that he was Lieutenant Michael BROUILLETTE, born about 1745, in Canada, who lived at Vincennes, Illinois County, Virginia. He served as a Virginia soldier with General George Rogers CLARK of Revolutionary War fame. His wife was Maria (or Ann) CHARBONNEAU BARBE and some of their children were Michel, Jr. who married Marie Louise DeRICHARDVILLE, and Pierre B. who married Julia BOUCHER. Michael BROUILLETTE died in 1796, at Knox County, Indiana. That is all I know