The town of Edmeston, in Otsego County, extends to the west as far as the Unadilla River, a line that was established by the 1768 Treaty of Fort Stanwix between the British and the Iroquois, negotiated by Sir William Johnson. The town's name came from the brothers, Robert and William Edmeston, who had been granted of land in what is now the northwest corner of the town. The hamlets of West Edmeston and South Edmeston are situated in the Unadilla Valley, while the hamlet of Edmeston lies in the Wharton Valley. Earlier settlers came from New England; for most of the settlers, it was planned as a stopover on their way west. A strong Baptist influence came with the settlers. Universalists, Methodists and Roman Catholics soon arrived.