James Lord Pierpont "Pierpont, James 48, Eliza J. 38, Lillie 16, Thomas 8, Josiah 5, and Maynard B. 4." If Lillie is 16 in 1870, she was born in about 1854. In 1869, Pierpont moved to Quitman, Georgia. There he was the organist in the Presbyterian Church, gave private piano lessons and taught at the Quitman Academy, retiring as the head of the Musical Department. In 1880, Pierpont's son, Dr. Juriah Pierpont, M.D., renewed the copyright on "Jingle Bells" but he never made much money from it. It took considerable effort to keep his father's name permanently attached to the song after the
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