Henry Archer was one of the pioneers of the Warp 5 engine, and worked extensively with Zefram Cochrane. He was also the father of noted United Earth Starfleet captain and Federation President, Jonathan Archer.
In 2118, Henry Archer finished his doctorate dissertation at State University of New York at Albany. It was titled, "Design and Development Necessities of a Warp Five Engine." (ST reference: Federation: The First 150 Years)
Henry had Clarke's Syndrome. He experienced hallucinations and died when Jonathan was 12 years old (in approximately 2124). In 2154, Henry's son would wonder if genetic engineering would have saved his father's life. (ENT episode: "Cold Station 12")