Guy Park, also known as Guy Park State Historic Site or Guy Park Manor, is a house built in 1774 in the Georgian style for Guy Johnson, the Irish-born nephew and son-in-law to Sir William Johnson, 1st Baronet, the British Superintendent for Indian Affairs in colonial New York. Built of limestone, the house was originally situated on a square mile of land …Guy Park, also known as Guy Park State Historic Site or Guy Park Manor, is a house built in 1774 in the Georgian style for Guy Johnson, the Irish-born nephew and son-in-law to Sir William Johnson, 1st Baronet, the British Superintendent for Indian Affairs in colonial New York. Built of limestone, the house was originally situated on a square mile of land on the north side of the Mohawk River and near it for access to water transportation.