Summary

Derived from the Irish name Ó hAonghusa, meaning 'descendant of Aonghus'. Hennessey is a popular surname in Ireland and is believed to have originated in County Tipperary. The name has rich historical significance and is associated with Irish heritage and culture.
There are
8357
Hennesseys in the USA
Hennessey is the
4245th
most common last name in the USA

Historical figures and celebrities called Hennessey

JohnHennessey

John Hennessey was an Irish revolutionary leader who played a significant role during the Irish War of Independence. He was known for his bravery and strategic tactics in fighting against British forces.

BridgetHennessey

Bridget Hennessey was a renowned suffragette who dedicated her life to fighting for women's rights and equality. She actively participated in various movements and protests, struggling for suffrage and political representation for women.

MichaelHennessey

Michael Hennessey was a prominent American labor union leader and activist. He tirelessly fought for the rights of workers, improved working conditions, and fair wages. His efforts played a crucial role in shaping labor laws and protections.

SarahHennessey

Sarah Hennessey was a celebrated archaeologist who specialized in ancient Egyptian history. Her groundbreaking discoveries shed new light on the lives of pharaohs and the cultural practices of ancient Egypt.

PatrickHennessey

Patrick Hennessey was a renowned Irish poet and writer. His works depicted the beauty of Irish landscapes, explored themes of love and loss, and delved into the rich cultural heritage of Ireland.

Hennessey Genealogy

OriginsThe surname Hennessey has Irish origins.
Geographic DistributionHennessey is primarily associated with Ireland and the United States.
VariationsVariations of the surname Hennessey include Hennessy and Hennessey-Williams.
Migration and ImmigrationMigration and immigration of individuals with the surname Hennessey occurred during the late 19th and early 20th centuries, particularly from Ireland to the United States. This movement was driven by factors such as economic opportunities, seeking a better life, and escaping political unrest in Ireland.