Jacques-Timothée Boucher, Sieur de Montbrun (; 23 March 1731 – October 1826), anglicized as Timothy Demonbreun, was a French-Canadian fur trader, a Lieutenant in the American Revolution, and Lieutenant-Governor of the Illinois Territory. He is known as the "first citizen" of Nashville, Tennessee. Hunter and entrepreneur Demonbreun's great-grandfather, Pierre Boucher, was the first Canadian to be raised to the rank of nobility. His father, Etienne, served in the French army in Canada during the French and Indian War, the North American front of the Seven Years' War. After his country, France, was beaten in the Battle of the Plains of Abraham in Canada in 1759, Jacques-Timothee Boucher at the age of 28 migrated south to the British colonies, what became the United States, and got into the fur trade. Preferring the simple life of a trapper and hunter, he dropped the noble title, adapting it in an anglicization as his new surname, Demonbreun. He had begun traveling to the Middle Tennessee area in the 1760s while in his 30s. In 1766, while hunting near the muddy water at the mouth of a small creek entering the Cumberland River in the region called French Lick, Demonbreun noticed a large number of buffalo and deer using a salt lick. The spring is a natural source of sulfurated water, and eventually became known as Sulphur Dell. He lived in a cave there for several months until he could build a cabin near the river to use as his home base for fur trapping. Demonbreun made frequent trips to the early Nashville settlement to engage in fur trading with local Native Americans. When James Robertson and the Watauga settlers established Fort Nashborough in 1778, they were surprised and relieved to find that Demonbreun, a white man, was thriving there. The cave that he lived in is now listed on the National Register of Historic Places listings in Davidson County, Tennessee in July of 1979. It was first explored between 1750-1799. The cave has been named after him: "Demonbreun's Cave" Military service Demonbreun joined the George Rogers Clark expedition and received an appointment as lieutenant governor in command of the Northwest Territory. He settled at Fort Kaskaskia in the Illinois Country, where he served as lieutenant governor from 1783 to 1786. In 1786 he resigned from military service and soon thereafter moved permanently to Nashville. Family Demonbreun traveled extensively, and managed two careers and two