Copied from "History of Bedford, Somerset, and Fulton Counties, Pa. 1884"

Southampton, now part of Bedford county, was erected by order of the court of quarter sessions during the April term in 1799. Its boundaries were then described as follows: "Beginning at the province line near the house of Joshua Lewman, thence along the top of Evitt's mountain to the dividing ridge between the waters of Flintstone and the Cove creek about nine miles, thence along the top of the said ridge to Terrace mountain about two miles, thence along the top of said mountain to the dividing ridge between the waters of Town creek and Sideling hill creek and the waters of Juaniata about six miles, thence along the top of said ridge to the top of Town hill about ten miles, thence along the top of said hill to the province line about ten miles, thence by said line to place of beginning."

At that time Southampton included Mann and Monroe townships.