 DeWitt Clinton, Livingston was elected President pro tempore of the State Senate and became Acting Lieutenant Governor of New York.He was a delegate to the Whig National Convention from New York in 1839 where he served as Convention Vice-President.He married his cousin, Joanna Livingston (1759–1827), the ninth child of Judge Robert Livingston (1718–1775) and Margaret (née Beekman) Livingston (1724–1800).