John H. Hennessy (born 1919)Hennessy family✓Confirmed how we know thisVitalsBorn1919✓Confirmed how we know thisFamilyFatherMark Hennessy (born 1879)MotherMary E. Hennessy (born 1882)Sources1940, ED 68-5, p.41, line 74View John H. Hennessy's family tree · See this person in the family network · Find how you are related