The Highland Patent had been incorporated into Dutchess County in 1737, where it was known as the South Precinct. In 1806 a very small portion north of the Hudson Highlands by the mouth of Fishkill Creek was split off from Philipstown (which had been established in 1788 out of the westernmost three and part of a fourth parcel of the Philipse Patent) and given to the Town of Fishkill. In 1812 the balance of the Philipse Patent was separated from Dutchess County and became today's Putnam County.