O'Callaaghan Surname

8,193,072nd
Most Common
surname in the World

Approximately 5 people bear this surname

Most prevalent in:
England
Highest density in:
Ireland

O'Callaaghan Surname Definition:

(Celtic) the Irish O’Ceallachain = Descendant of Ceallachan [v. O’-, and Callaghan]

O'Callaaghan Surname Distribution Map

By incidenceBy frequencyBy rank
Incidence (high to low)Incidence (low to high)Alphabetic A-ZAlphabetic Z-ARank (high to low)Rank (low to high)
PlaceIncidenceFrequencyRank in Area
England41:13,929,515290,718
Ireland11:4,708,93929,543

O'Callaaghan Surname Meaning

From Where Does The Surname Originate? meaning and history

(Celtic) the Irish O’Ceallachain = Descendant of Ceallachan [v. O’-, and Callaghan]

— Surnames of the United Kingdom (1912) by Henry Harrison
DNA test information

O'Callaaghan Last Name Facts

Where Does The Last Name O'Callaaghan Come From? nationality or country of origin

O'Callaaghan is borne by more people in England than any other country/territory. It may also be found in the variant forms:. Click here to see other possible spellings of this surname.

How Common Is The Last Name O'Callaaghan? popularity and diffusion

It is the 8,193,072nd most prevalent family name world-wide, held by approximately 1 in 1,457,509,183 people. It occurs predominantly in Europe, where 100 percent of O'Callaaghan are found; 100 percent are found in Northern Europe and 100 percent are found in British Isles.

This surname is most commonly used in England, where it is carried by 4 people, or 1 in 13,929,515. In England it is most frequent in: Warwickshire, where 100 percent live. Other than England it occurs in one country. It also occurs in Ireland, where 20 percent live.

Phonetically Similar Names

Incidence (high to low)Incidence (low to high)Alphabetic A-ZAlphabetic Z-ASimilarity (high to low)Similarity (low to high)Prevalent jurisdiction A-ZPrevalent jurisdiction Z-A
SurnameSimilarityWorldwide IncidencePrevalency
O'Callaghan9623,529/
O'Callagahan923/
O'Calllaghan921/
O'Challaghan921/
O'Callaghhan920/
O'Callaghane920/
Ocallaghan914,377/
O'Callagan9110/
O'Calaghan915/
O'Ceallaghain880/
O'Callagham877/
Ocallagahan874/
Ocallaughan871/
Ò'callaghan871/
Ocalllaghan871/
Ocallacghan871/
O'Callaghon870/
OcCallaghan870/
O'Collaghan870/
O'Calloghan870/
O'Calleghan870/
Ocalaghan866/
Ocallagan864/
O'Calagan860/
O'Ceallaighain851/
Ocallagham827/
Oçallaghan821/
Ochalaghan820/
Ocalloghan820/
Ocalagan80118/
Ocaleghan760/
Ocallogan760/
Asalaghan673/
Ajolaghan671/
Okelagan6023/
O'Giollagain580/
Asalagham571/
Hasalagane5514/
Accalagoun551/
Asalagam506/
Show All Similar Surnames

Search for Another Surname

The name statistics are still in development, sign up for information on more maps and data

By signing up to the mailing list you will only receive emails specifically about name reference on Forebears and your information will not be distributed to 3rd parties.

Footnotes

  • Surnames are taken as the first part of an person's inherited family name, caste, clan name or in some cases patronymic
  • Descriptions may contain details on the name's etymology, origin, ethnicity and history. They are largely reproduced from 3rd party sources; diligence is advised on accepting their validity - more information
  • Name distribution statistics are generated from a global database of over 4 billion people - more information
  • Heatmap: Dark red means there is a higher occurrence of the name, transitioning to light yellow signifies a progressively lower occurrence. Clicking on selected countries will show mapping at a regional level
  • Rank: Name are ranked by incidence using the ordinal ranking method; the name that occurs the most is assigned a rank of 1; name that occur less frequently receive an incremented rank; if two or more name occur the same number of times they are assigned the same rank and successive rank is incremented by the total preceeding names
  • Ethnic group cannot necessarily be determined by geographic occurrence
  • Similar: Names listed in the "Similar" section are phonetically similar and may not have any relation to O'Callaaghan
  • To find out more about this surname's family history, lookup records on Family​Search, My​Heritage, FindMyPast and Ancestry. Further information may be obtained by DNA analysis