Cadwalader, John was born on June 27, 1843 in Philadelphia, Pennsylvania, United States. Son of Judge John and Henrietta Maria (Bancker) Cadwalader.
Bachelor of Arts, University of Pennsylvania, 1862, A.M., 1865 (Doctor of Laws, same, 1912).
Admitted to bar, 1864 and began practice at Philadelphia. Manager and president Pennsylvania Institution for the Blind, since 1870. President Baltimore & Philadelphia Steamboat Company Director public schools, 1875-1885.
Collector, port of Philadelphia, 1885-1889. Jury commissioner United States Circuit Court.