- Member of Class of 1865 (non-graduate)
- Member of Philomathean Society, Zeta Psi fraternity, and University Chess Club
Inman Horner was born on August 25, 1846, in Philadelphia to Alfred Horner and Elizabeth Driver White.
Horner enrolled in 1861 as a member of the College Class of 1865. He became a member of the Philomathean Society, the University Chess Club, and the Zeta Psi fraternity before leaving at the close of sophomore year.
Horner became a lawyer; he served as vice president of the Philadelphia Law Academy in 1871. He was also a member of the American Philosophical Society and the Numismatic and Antiquarian Society. He died in Philadelphia on November 28, 1912.