Thanks to Berwick St David's Masonic Lodge who sent me a link to Berwick, Pennsyslvania's history page.
In 1786, Evan Owen, an Englishman, decided to settle on the land which is now called Berwick.
He persuaded fellow countrymen, John and Robert Brown to settle. They called the settlement “Owensburg” but Owen renamed the land “Berwick” because the wife of one of the Brown brothers came from Berwick-upon-Tweed.
I wonder if we can discover this wife's first name and maiden surname and find her family in Berwick-upon-Tweed?