Do not confuse with Hennessy, John (John J.) (LC 88065660), sports writer and journalist. John J. Hennessy writes on the Civil War.
No events listed. (add an event)
Is this you?
Become a LibraryThing Author.
Improve this author
John J. Hennessy is currently considered a "single author." If one or more works are by a distinct, homonymous authors, go ahead and split the author.
John J. Hennessy is composed of 2 names. You can examine and separate out names.