 Franklin Park, then Six Mile Run, served as the first site of the Somerset County Courthouse and jail from 1714 until 1737 when a fire destroyed the building and the county seat was moved to Millstone, New Jersey.Occasionally Franklin Park was referred to as Somerset Courthouse during the time the courthouse was located here.A commemorative marker is located on Route 27 between Clover Place and Bennington Parkway near the original courthouse site.