Beginnings  (Westmoreland Co. Route 30) Pop. 17,000; alt. 1,103 ft. Founded 1786 as Newtown; name changed in 1787 in honor of Maj. Gen. Nathanael Greene, Revolutionary Commander. County seat, succeeding Hannastown, former county seat, three miles to the northward on historic Forbes Road: burned by the Indians; first English court West of the Allegheny Mountains was held, 1773-1787 In heart of bituminous coal fields of Western Pennsylvania. Maj. Gen. Arthur St. Clair, President of Continental Congress and Governor of Northwest Territory, and his wife, Phoebe Bayard St. Clair, buried here in St. Clair Park. Greensburg is the seat of Radio Station WHJB.