A Colonel, he commanded a regiment in the French War. Chief Justice of the County Court and a member of the Connecticut Legislature for thirty-nine years (Browning, Charles. Americans of royal descent, 7th ed., Baltimore : Genealogical Pub. Co., 1969, pg. 70-71).
A man of high character and large influence (Goodrich, Samuel Griswold. "Recollections of a lifetime." NY " Miller, Orton & Co., 1856, v.1, p. 16).
findagrave.com has his surname as "Chauincey."