Hennessy Name Meaning

Irish: reduced form of O’Hennessy, an Anglicized form of Gaelic Ó hAonghusa ‘descendant of Aonghus’ (see Angus, and compare McGinnis).

Similar surnames:

List of People with Surname Hennessy

According to our database, there are a total of 3,001 people with the surname Hennessy. Among these people surnamed Hennessy, there are about 485 distinct names, with an average of 6 people who have the same name. Daniel Hennessy, Sean Hennessy and Thomas Hennessy are the top three most widely-used names from the list of people surnamed Hennessy, with 58, 45 and 45 people respectively.

Besides that, we found that New York has the largest number of people surnamed Hennessy, with a total of 376 people, and there are a total of 197 distinct names among these people. California is the second-most populous state for people with the surname Hennessy, with a total of 326 people and an average of 194 distinct names.