James Lord Pierpont "Jolly Old Saint Nicholas"). In this slightly modified form, "Jingle Bells" became one of the most popular and most recognizable songs ever written. In 1859, the Unitarian Church in Savannah had closed because of its abolitionist position, which was unpopular in the South. By 1860, the Rev. John Pierpont, Jr. had returned to the North. James, however, stayed in Savannah with his second wife Eliza Jane, and at the beginning of the Civil War, joined the Lamar Rangers, which became part of the Fifth Georgia Cavalry of the Confederacy. Records indicate that he served as a company clerk. He also
James Pierpont (mathematician) New Haven and was appointed as a lecturer at Yale University, where he spent most of his career. In 1898, he became professor. Initially, his research dealt with Galois theory of equations. The Pierpont primes are named after Pierpont, who introduced them in 1895 in connection with a problem of constructing regular polygons with the use of conic sections. After 1900, he worked in real and complex analysis. In his textbooks of real analysis, he introduced a definition of the integral analogous to Lebesgue integration. His definition was later criticized by Maurice Fréchet. Finally, in the 1920s, his interest turned