The Wallace House and Old Dutch Parsonage in Somerville, New Jersey, represent important historical structures within the community that have been preserved and are operated as historic sites by the New Jersey state parks system. Both buildings date from the eighteenth century and reflect architectural traditions and construction methods characteristic of colonial and early American residential design. The Wallace House served as a residential and commercial structure during a period of significant historical importance, while the Old Dutch Parsonage functioned as a minister's residence for the Dutch Reformed Church. Both properties occupy significant positions within Somerville's historical and cultural landscape, having hosted important historical figures and witnessed significant historical events during their long operational histories. The structures represent surviving examples of eighteenth-century architecture and building practices, providing tangible evidence of construction techniques, material choices, and design approaches from the colonial and early American periods. The preservation of these buildings as museum and historic site properties has ensured that future generations can experience and appreciate the architectural and historical significance they embody. The paranormal reputation of the Wallace House and Old Dutch Parsonage is particularly concentrated on the Old Dutch Parsonage property, where documented supernatural phenomena have been reported over an extended historical period. Paranormal activity at the Old Dutch Parsonage has included audible disturbances characterized by loud banging and knocking sounds emanating from within the structure at times when no physical explanation for the noises could be identified. Objects have been reported moved from their original positions without human intervention, items displaced in ways that suggest intelligent manipulation rather than random disturbance. Screaming sounds have been heard by multiple witnesses, vocalizations of distress or anguish that lacked visible human sources. These phenomena accumulated over time, creating a reputation for the Old Dutch Parsonage as a haunted location with persistent and troubling paranormal activity. The paranormal situation at the Old Dutch Parsonage ultimately prompted a spiritual intervention in the form of a prayer and exorcism session conducted by a visiting clergyman during the late 1980s. The religious professional performed a religious ceremony designed to address and resolve the paranormal phenomena through spiritual and religious authority. Following the prayer session and associated religious ritual, the paranormal phenomena appear to have ceased or been substantially reduced. Witnesses and property managers reported that the loud banging, object movement, and screaming sounds that had characterized the location no longer manifested with the same frequency or intensity. This apparent resolution of the paranormal activity through religious intervention has been interpreted by some observers as evidence of the efficacy of religious and spiritual approaches. The Wallace House and Old Dutch Parsonage remain under the stewardship of the New Jersey state parks system, which maintains the buildings as historic sites open to public visitation and interpretation. The properties are listed within paranormal databases and ghost hunting communities as historically significant haunted locations, though the documented paranormal activity at the Old Dutch Parsonage appears to have been substantially resolved through the late 1980s prayer session. The buildings continue to serve historical and educational functions, providing visitors with opportunities to experience colonial and early American architecture and learn about the historical period these structures represent. Paranormal investigators and historical researchers continue to document the history of the paranormal phenomena that occurred at the location and the subsequent spiritual intervention.