Washington's famous, admiring, quote about the heroic Scotch-Irish of Virginia is often cited (see my July 2017 post here, tracing the earliest source I have ever found for it). If he said it, it was around the 1770s during the American Revolution. But here is an earlier one, from 1755, with a very different slant. Washington was just 33 years old, and a volunteer aide-de-camp to notorious General Edward Braddock.
"... After surviving the disastrous Braddock expedition, Washington was raised to the position of Colonel and commander in chief of Virginia forces on the western frontier in August 1755. He returned to Winchester to take command on October 10, and was not impressed, calling the town "this vile post" and complained of the "obstantcy and dastardliness" of the Scotch-Irish settlers of the area. Nevertheless, Winchester was a vital link in a defensive chain intended to counteract French forts like Duquesne and defend settlers from Native American raids ..."This was the very same year that Winchester's Ulster-Scots emigrant population were described as 'a spurious race of mortals known by the appelation Scotch-Irish' (see previous post here). As more of George Washington's papers are researched and digitised, I expect that more and more Scotch-Irish / Ulster-Scots material will be unearthed.
Source here