Horton, Oliver Harvey was born on October 20, 1835 in Cattaraugus Company, New York, United States. Son of Review Harvey W. and Mary H. Horton.
Educated Rochester, New York, and Kingsville, O. Bachelor of Laws, Union College of Law (now Law School of Northwestern University), 1863. (Doctor of Laws, Northwestern, 1889).
Admitted to bar, 1863, and began practice at Chicago. Corporation counsel, 1887. Judge of Circuit Court, 1887-1903, serving in Appellate Court, 1st District of Illinois, 1888-1903.
Trustee Garrett Biblical Institute, Northwestern University, Lewis Institute, and Wesley Hospital. Delegate General Conference of Methodist Episcopal Church Church, 1880, 1900, Ecumenical Conference, London, 1881. President Laymen’s Association, Rock River Conference Home: Evanston, Ill.