... John and Catherine (NEWCOMER) NEWCOMER. ... were first cousins, being grandchildren of Wolfgang NEWCOMER, who came from Switzerland to Philadelphia about 1720. John NEWCOMER was an influential man in Washington county, owning large estates and conducting a flour mill near his home at Beaver Creek. He founded the flour and grain commission firm of Newcomer & Stonebraker in Baltimore. Washington county chose him as its sheriff, county commissioner, state senator, and a member of the convention which framed the State Constitution of 1851. ...