A resident of Pennsylvania who served as captain during the Revolutionary War, and as colonel of the First Pennsylvania Regiment during the War of 1812.

Abram Horn was of German lineage and a native of Philadelphia. He moved to Easton, Pennsylvania, in early boyhood. During the war of the Revolution he served his country as a sergeant in Captain Thomas Craig's company in the Second Pennsylvania Battalion, under Colonel (afterward General) Arthur St. Clair. During the war of 1812 he was lieutenant-colonel of the First Regiment Volunteer Riflemen of Pennsylvania.