 Eventually, the name of the settlement that grew up around the fort was shortened to Ligonier.In 1817, the Philadelphia-Pittsburgh Turnpike was completed, a gravel road that was the precursor to today's US Route 30.Fort Ligonier was a logical place for travelers to break their journey, and with such commercial opportunities in mind, a local resident named John Ramsay (sometimes spelled Ramsey) laid out the street plan, including the space now known as the Diamond.