Hennessey (surname)
Hennessey is an Irish surname, being the anglicised form of Ó hAonghusa. Families of this name were found in Kingdom of Uí Failghe and Kingdom of Desmond. Notable people with the surname include:
- Brad Hennessey, baseball player
- Liam Hennessey, world class DJ, Engineer and philanthropist.
- Charlotte Hennessey, Canadian stage actress and silent film era stage mother of the very famous Mary Pickford, and her siblings Lottie Pickford and Jack Pickford
- Dan Hennessey, Canadian voice actor
- Dorothy Hennessey, Roman Catholic religious sister and activist
- Gwen Hennessey, Roman Catholic religious sister and activist
- Keith Hennessey, director of the U.S. National Economic Council
- Terry Hennessey, Welsh footballer
- Wayne Hennessey, Welsh footballer
- John Hennessey, founder of Hennessey Performance Engineering
Fictional characters:
