Delahunty Name Study

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Location: Irelandmap
Surnames/tags: Delahunty Delahunt
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How to Join

Please contact the Name Study Coordinator Maggie N. or post a comment at the foot of the page. If you have any questions, just ask. Thanks!


The goal of this Delahunty Name Study to collect together in one place everything about the Delahunty surname and the variants of that name. The hope is that other researchers like you will join our study to help make it a valuable reference point for people studying lines that cross or intersect.

How the Delahunty Name Study began

Strangely enough, it has begun because of my 3rd Great-Grandmother, Mary Delahunty. She is my brick wall and although this Name Study has begun as a personal quest for information, it will cast a wider net to embrace the origins of the Delahunty surname as well as the migration and distribution patterns of it.

Origins of the Delahunty surname

Quoting from various sources -

From John Grenham: Delahunty: fairly numerous: S Leinster etc. Ir. Ó Dulchaointigh (plaintive). A sept of Ely O'Carroll (Offaly). Also as Dulanty. [1]

Ó Dulchaointigh Delahunt(y), Dulanty: cuíosach líonmhar: Laighin theas. Bhí an chlann sa gaolmhar le Ó Cearbhaill Éile. Brí: ? magadh caointeach. [2]

Ireland Delahunty

I decided to take on the project as it was not registered yet at the One Name Guild. I did an inquiry at the Surname Maps for the Delahunty Surname in Ireland in the 1901 Irish census.

For 1901, the number of people in Ireland with the Delahunty in 1901 was 747 (It ranked as the 846th surname in Ireland).

For 1901, it's variant, Delahunt ranked as the 1354th in surname with only 172 people in Ireland.

Many surname studies say that Delahunt and Delahunty are one and the same and that it's origins is Irish. Therefore, I begin my collection data in Ireland.

Earliest record in Ireland

Taken from the numbers of Irish, Scotch and English listed in Pender's 'Census' of 1659, it seems to have Delahunty centered in Crannagh, Kilkenny and Ballybrit. See link: Pender's 'Census' of 1659 under spelling of Dullahunty

1891 England Census of Delahunty

Delahunty.1891 England census. 53% Lancashire; 13 %Dorset, 13%London. 1% Glamorgan, Surrey, Kent, Hampshire

Links to explore

John Grenham
The Surnames of Ireland 6th Edi., By Edward MacLysaght.

Previous Studies of the Delahunty Surname

From The Oxford Dictionary of Family Names in Britain and Ireland, by Patrick Hanks, Richard Coates, Peter McClure (Oxford University Press, Nov 17, 2016):

History of Delahunty Surname
Delahunty Variant of Delahunt
Delahunty Variant of Delahanty

Variants List

All the varients are listed here at Forebears Delahunty.

  • DULHUNTY -I may add the spelling of Dulhunty in Australia.

Today (2018), it is most prevalent in Australia; secondly, in Ireland.

Other varients captured in Ireland and England were Delahunt and Delahanty.


Delahanty Surname Count in 1881 Great Britain Census

*DELAHANTY is another variant.

GB frequency 1881: 10
Main GB location 1881: Cheshire and Lancs
Irish: from Ó Dulchaointigh, see Delahunty.

Data Collection

The list for Data Collection is taking from the One Name Guild - Read more at Sources for Data Collection

Initially concentrating on indexed sources such as vital records, including religious.

Vital Records: Births, Marriages and Deaths of course, but also baptisms, burials, adoptions and divorces, post mortem inquests, monumental inscriptions, bastardy examinations, wills and administrations.

Place data: Censuses, street directories, telephone directories, Electoral Rolls, property deeds, militia lists, tithe records, glebe terriers, manorial records.

Educational data: school records, university alumni, degree lists.

Occupational data: Censuses again, apprentice records, military records, trade and professional directories, livery companies, manorial records, trade union records.

Mobility data: settlement certificates, immigration, emigration, ships passenger lists, aliens registration and naturalisation records.

Taxation records: Lay subsidies, Poll Tax, Hearth Tax, Window Tax, Land Tax, death duties.

Other life events: Criminal and Court records, poor law records, workhouse records, official gazettes, newspapers, religious records, patent records.

Heraldic records: official (College of Arms), unofficial (Burke’s General Armoury), Heralds’ visitations.

Assembled biographies, pedigrees and histories: Copies may have been deposited at the Society of Genealogists, at a family history society, a local Record Office, or a local studies library.

Photographs: Individuals, churches, houses, occupational pictures, etc.

Maps: Street maps, Ordnance Survey gazetteers, place names.



  1. MacLysaght, Edward, More Irish Families, Dublin, 1982
  2. Ó Droighneáin, M. & Ó Murchú, M.A., An Sloinnteoir Gaeilge & an tAinmneoir, Baile Atha Cliath, 1991)

See Also:

  • One Name Studies in Ireland: "Michael Merrigan reveals a different approach when researching Gaelic surnames" Journal of One-Name Studies, October 2000. Pp. 10-13. Volume 7. Issue#4. October 2000. (Part 1). How lrish one-name studies differ from those in England. By Michael Merrigan. Pp. 12-16. Journal of One-Name Studies, October 2000. Volume 7. Issue#5. January 2001. (Part 2).The line between Gaelic and non-Gaelic studies. Part two of our special report on One Name Studies in Ireland by Michael Merriigan. Paid Wall Link Paid Wall Link note: Must be a One Name Guild member to access or locate in your library.
  • An Irish One-Name Study by Vicki Perry. Journal of One-Name Studies, Vol 10 No 9, Jan-Mar 2011.

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