Town of Chambersburg, PA Marker Text: Formed on September 9, 1784 from Cumberland County and named for Benjamin Franklin. Site of Falling Spring, noted limestone trout stream. Birthplace of James Buchanan, 15th President of the United States. Chambersburg, county seat, was laid out 1764. Location: County Courthouse, Memorial Square (N. Main St.), corner of U.S. Route 11 & 30, Chambersburg, PA. Erected by the Pennsylvania Historical and Museum Commission in 1981. The front of the Franklin Co…