Formed March 12, 1800 from Allegheny County. Named for Gen. Richard Butler, Revolutionary officer. A young George Washington had crossed this area, 1753. County seat was established at Butler in 1803, and the county was home of the Harmony Society, 1804-15.

Marker is at the intersection of South Main Street (Pennsylvania Route 8) and East Diamond Street, on the right when traveling south on South Main Street.

Courtesy hmdb.org

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