In 1760, Jones was working in the law office of William Smith, and was admitted in October of that year to practice before the New York Bar. During the New York-Massachusetts boundary dispute of 1784-1786, Jones along with Alexander Hamilton represented New York, and Jones traveled to Boston such as to obtain materials that would support New York's claims. In 1786, he was appointed along with Richard Varick to collect and publish all of the statutes then in force; with only minor changes by the state legislature, this work by Jones and Varick remained the only comprehensive collection of New York's laws for the remainder of that century. Also in 1786, he was elected from Queens County to the New York State Assembly, as a member of the Anti-Federalist Party aligned with Governor George Clinton, serving in the Assembly until 1790. Jones was elected a delegate to the Continental Congress in 1788, but did not attend the session. That was also the year of the greatest and most historical thing he ever did: at the New York convention in Poughkeepsie to consider ratifying the United States Constitution, he broke the impasse about whether a Bill of Rights had to be added. In particular, Jones proposed to remove the words "on condition that" a listing of rights would be added, and proposed to insert the words “in full confidence that" a listing of rights would be added; Jones won that battle by 31 votes to 29, which assured both the success of the Constitution as well as the later addition of a Bill of Rights. Jones was Recorder of New York City from 1789 to 1797, and was a member of the New York State Senate from 1791 to 1799. On February 17, 1797, the office of New York State Comptroller was created by the New York State Legislature to succeed to the State Auditor, Peter T. Curtenius; on March 15 of that year, Jones was appointed by the Council of Appointment as the first holder of the office. Three years later, the state legislature reduced his salary, and the legislature also moved from New York City to Albany; for some combination of those reasons he resigned and returned to his home on Long Island.
Personal life
Jones's first wife was Ellen Turk, who died young. In 1768, he married Cornelia Haring, a daughter of Elizabeth Haring. Together, Samuel and Cornelia were the parents of Samuel Jones, who also served as Recorder of New York City and the Chancellor of New York. Jones died on November 25, 1819. He left a widow and five sons.
Legacy
in New York City's NoHo district was named after Samuel Jones.
