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 (born 1980), baseball player
 * Charlotte Hennessey (1873–1928), Canadian actress; mother of Mary Pickford (Gladys Louise Smith), Lottie Pickford and Jack Pickford
 * Dorothy Hennessey (1913–2008), Roman Catholic religious sister and activist
 * Gwen Hennessey (born 1932), Roman Catholic religious sister and activist
 * John Hennessey, founder of Hennessey Performance Engineering
 * Keith Hennessey, director of the U.S. National Economic Council
 * Terry Hennessey (born 1942), Welsh footballer
 * Wayne Hennessey (born 1987), Welsh footballer
 * David Hennessey (1858-1890), American police chief

Fictional characters:
 * Alistair Hennessey, fictional rival to the eponymous character of The Life Aquatic with Steve Zissou