Born: April 12, 1818, Shokan, New York.
Died: September 27, 1879, Manhattan, New York.
Buried: Warwick Cemetery, Warwick, New York.
Horatio was the son of David Abbey and Nancy Farnham, and brother to Alonzo Abbey. He married twice, to Nancy Maria Young (1840) and Cordelia Burt (1863).
In 1845, Union College in Albany, New York, awarded him an honorary Bachelor of Arts degree.