Hennigan Name Study

Privacy Level: Open (White)

Surnames/tags: Hennegan Hennigan Henneghan
This page has been accessed 1,120 times.

About the Project

The Hennigan Name Study project serves as a collaborative platform to collect information on the Hennigan name. The hope is that other researchers like you will join the study to help make it a valuable reference point for other genealogists who are researching or have an interest in the Hennigan name.

As a One Name Study, this project is not limited to persons who are related biologically. Individual studies can be used to branch out the research into specific methods and areas of interest, such as geographically (England Hennigans), by time period (18th Century Hennigans), or by topic (Hennigan DNA, Hennigan Occupations, Hennigan Statistics). These studies may also include a number of family branches which have no immediate link with each other. Some researchers may even be motivated to go beyond the profile identification and research stage to compile fully sourced, single-family histories of some of the families they discover through this name study project.

Also see the related surnames and surname variants.

How to Join

To join the Hennigan Name Study, first start out by browsing our current research pages to see if there is a specific study ongoing that fits your interests. If so, feel free to add your name to the Membership list below, post an introduction comment on the specific team page, and then dive right in!

If a research page does not yet exist for your particular area of interest, please contact the Name Study Coordinator: Feargal Hennigan for assistance.

... ... ... is a member of the Hennigan Name Study Project.

Once you are ready to go, you can also show your project affiliation with the ONS Member Sticker:


Research Pages

Here are the current research pages included in the study. We could use your help! If you would like to start a Hennigan related research page, or already have one do let us know.


  • F.L. Hennigan. Descended from Thomas Hennigan (abt.1832-1899) of Lettergorman/Lahanaght, County Cork.
  • Lawrence Bailey. Descendant of Hennegan/Hennigan Family from Dunmaway, County Cork, Province of Munster, Ireland, emigrated to Saint Catharines, Grantham, Lincoln, Ontario, Canada to work on the Welland Canal in the 1820s. Emigrated from Canada to Niagara Falls, NY to work in chemical Plants in the 1930s.
  • Timothy May. Great-Great-Great-Grandmother was a Heanan, possibly of County Roscommon. Two distant DNA matches have the names Heneghan and Hennagin. In my paternal ancestry there is a distant DNA match from Dublin with Heenan maternal ancestry.

Surname Origins

  • The name Hennigan and its variants are anglicisations of the Irish names Ó hÉidhneacháin and Ó hAnnagáin.
  • The name Ó hÉidhneacháin, comes from County Mayo. It means "descendant of Éidhneacháin". A personal name possibly derrived from eidheann (ivy). It is sometimes anglicised as "Bird" under the incorrect presumption it is derrived from éan, meaning bird[1]
  • The name Ó hAnnagáin, comes from County Limerick. It means "descendant of Annagáin (a diminutive of Annadh)".[2]

Surname Variants

As Gaeilge

  • Ó hÉidhneacháin
  • Ó hÉineacháin
  • Ó hÉanacháin
  • Ó hAnnagáin
  • Ó hAnnacháin




  1. “Ó hÉineacháin.” Irish Names and Surnames. Library Ireland. https://www.libraryireland.com/names/oh/o-heineachain.php.
  2. “Ó hAnnagáin.” Irish Names and Surnames. Library Ireland. https://www.libraryireland.com/names/oh/o-hannagain.php.

  • Login to edit this profile and add images.
  • Private Messages: Contact the Profile Managers privately: One Name Studies WikiTree and Feargal Hennigan. (Best when privacy is an issue.)
  • Public Comments: Login to post. (Best for messages specifically directed to those editing this profile. Limit 20 per day.)

Leave a message for others who see this profile.
There are no comments yet.
Login to post a comment.