Complex sentence: The settlement around the fort also came to be called Redstone, but eventually became eponymously known as Brownsville, Pennsylvania after its farsighted developer Thomas Brown, and use of "Redstone" devolved to apply to just one of its neighborhoods.
Split into simpler sentences: The settlement around the fort also came to be called Redstone, but eventually became eponymously known as Brownsville, Pennsylvania after its farsighted developer Thomas Brown. The use of "Redstone" devolved to apply to just one of its neighborhoods.