William Duer was a British-born American jurist, developer, and financial speculator from New York City. A Federalist, Duer wrote in support of ratifying the United States Constitution as "Philo-Publius". He had earlier served in the Continental Congress and the convention that framed the New York Constitution. In 1778, Duer signed the United States Articles of Confederation and is one of the Founding Fathers of the United States.

The 1st New York State Legislature, consisting of the New York State Senate and the New York State Assembly, met from September 9, 1777, to June 30, 1778, during the first year of George Clinton's governorship, first at Kingston and later at Poughkeepsie.