Thomas Brown, (1738—March 8, 1797)^[1] was an American colonial era husbandman, businessman, and land speculator. Along with his brother Basil,^[2] he acquired the bulk of the (Brownsville) lands towards the end of the American Revolution from Thomas Cresap^{[notes 1]}(Cresap's War, Lord Dunmore's War), early enough to sell plots to Jacob Bowman in 1780^[3] and Jacob Yoder^[4] who respectively made business firsts in 1780 and 1782; Jacob Bowman founded a trading post and tavern. Yoder got in a crop big enough to ship to New Orleans and invented the flat boat on Redstone Creek, inaugurating the water craft construction businesses which made the town an industrial powerhouse for the next seventy years.

When Brown traveled to or actually purchased the lands is murky, but it is accepted he formally founded the town of Brownsville, Pennsylvania in 1785, and he was further documented as personally laying out plots and boundaries himself at the age of 47 in that same year^[1] then advertising them for sale 'back east'. Based on his sales to Bowman and Yoder, he apparently had been selling lots for all the 1780s, before 1785.

His lands were in the area generally called Redstone or Redstone Fort or Redstone Old Fort or sometimes^{[notes 2]} Fort Burd (from construction in 1759).

The first flat boat (1782^[5]), and in 1811, the first steamboats on North America's inland rivers^[6] —among thousands and hundreds of others until well into the 1850s^[7]— were built in the town.

Brown died in 1797 and is interred in the Christ Church church yard in Brownsville.^[8]

Brown could not anticipate that his town would become the major steamboat construction center on the Mississippi watershed, but was arguably a forward thinker, a man forward thinking enough that he acted before the early 1780s^[9]—whilst the Indian threat was diminishing but still very real, and the French-Canadians were a similar but more remote threat— to realize the land at the Monongahela crossing ford of The Nemacolin Trail would be a valuable parcel. Unlike many others, he was not enticed by the many flatter better farmland plots available to the west now that the west side foothills and rivers were the last obstacles to travel.

Across was a complex of ancient Native American trails that foot traffic and mule trains could use heading west. The Brownsville site was a rare low banked region along the length of the hills leading down river, and the end of the shortest Wagon Trail leading back over the pass to the east across the mountain barrier range. The main Nemacolin trail lead west across mostly dry footing into the Ohio Country—and reached another wider river crossing near today's Wheeling, West Virginia on the Ohio. Either the preferred switch to traveling on the river or the trails would bottleneck settlers at Fort Burd and so offered great opportunities to outfit them on their westward trek. The booming businesses of Brownsville and surrounding communities did precisely that starting in 1782 (first flat boat built on Redstone Creek by ) even before Thomas Brown personally came west into the settlement and until sometime in the 1870s–1880s when large numbers of pioneers stopped taking boats to Missouri to connect with the California, Mormon, or Oregon Trails^{[notes 3]}

• History of Pennsylvania
• Monongahela River

• Glen Tunney. "TOMBSTONE OF THE FOUNDER OF BROWNSVILLE MAY BE IN ERROR". rootsweb.ancestry.com (newspaper article reprint).
• Dan Visnauskas, Fayette County and Brownsville Historical Society. "A Brief History of Brownsville, Pa". Fayette Forward Commission. Retrieved 2010-11-29.
• Hugh Rawson. "The French and Indian War (section)". the Brownsville Historical Society (published under the auspices of Nemacolin Castle). Retrieved 2010-11-30.

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