O'Mahoney Surname

124,133rd
Most Common
surname in the World

Approximately 3,674 people bear this surname

Most prevalent in:
England
Highest density in:
Ireland

O'Mahoney Surname Definition:

The O'Mahonys of Desmond are named from Mahon, son of Kian, king of Desmond, who fell at Clontarf in 1014. O'Donovan. "The O'Mahonys were powerful chieftains in Munster, and had extensive estates along the sea-coast of Cork and Kerry. Opposite Horse Island, off the former county, was their castle of Rosbrin, boldly erected on a rock over the sea; and its proprietor, availing himself of the natural advantage it possessed, led a life of such successful piracy that Sir George Carew, when lord president, was obliged to destroy it.

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O'Mahoney Surname Distribution Map

PlaceIncidenceFrequencyRank in Area
England1,5421:36,1344,740
Ireland1,3891:3,390607
Australia2971:90,89510,420
United States2401:1,510,246102,670
Wales841:36,8403,652
Canada321:1,151,42583,867
Scotland301:178,4619,900
New Zealand141:323,45226,435
South Africa131:4,167,516132,322
Netherlands91:1,876,35385,467
France81:8,302,840321,660
Isle of Man71:12,2602,387
Northern Ireland61:307,50612,899
Antigua and Barbuda61:16,5281,436
Bermuda51:13,0561,849
United Arab Emirates41:2,290,56860,372
Jersey31:33,0674,675
Switzerland31:2,737,638105,941
Sweden21:4,923,378241,212
Venezuela21:15,102,03869,873
Finland21:2,748,35172,663
Belgium21:5,748,322130,559
Norway11:5,142,286129,201
Pakistan11:178,643,885213,220
Germany11:80,505,459560,955
Romania11:20,077,87089,414
Puerto Rico11:3,550,1399,109
Philippines11:101,238,223404,861
PlaceIncidenceFrequencyRank in Area
Ireland1481:29,9323,032
PlaceIncidenceFrequencyRank in Area
England131:1,875,02858,113
Wales41:392,10412,338
Scotland21:1,871,60827,884
PlaceIncidenceFrequencyRank in Area
United States571:881,03053,642

O'Mahoney Surname Meaning

From Where Does The Surname Originate? meaning and history

The O'Mahonys of Desmond are named from Mahon, son of Kian, king of Desmond, who fell at Clontarf in 1014. O'Donovan. "The O'Mahonys were powerful chieftains in Munster, and had extensive estates along the sea-coast of Cork and Kerry. Opposite Horse Island, off the former county, was their castle of Rosbrin, boldly erected on a rock over the sea; and its proprietor, availing himself of the natural advantage it possessed, led a life of such successful piracy that Sir George Carew, when lord president, was obliged to destroy it." D'Alton.

Patronymica Britannica (1860) by Mark Antony Lower

O'MAHONY: The descendant of Mahon, which signifies a bear.

Ludus Patronymicus (1868) by Richard Stephen Charnock

O'Mahoney Last Name Facts

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

The surname O'Mahoney is more commonly found in England than any other country/territory. It can be found in the variant forms:. Click here for other possible spellings of this name.

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

The last name O'Mahoney is the 124,133rd most prevalent family name globally, borne by around 1 in 1,983,545 people. O'Mahoney occurs predominantly in Europe, where 84 percent of O'Mahoney are found; 83 percent are found in Northern Europe and 83 percent are found in British Isles.

The surname O'Mahoney is most frequently occurring in England, where it is carried by 1,542 people, or 1 in 36,134. In England O'Mahoney is most prevalent in: Greater London, where 34 percent are found, Greater Manchester, where 6 percent are found and West Midlands, where 6 percent are found. Excluding England this last name occurs in 27 countries. It is also found in Ireland, where 38 percent are found and Australia, where 8 percent are found.

O'Mahoney Family Population Trend historical fluctuation

The prevalency of O'Mahoney has changed through the years. In England the number of people who held the O'Mahoney last name expanded 11,862 percent between 1881 and 2014; in Ireland it expanded 939 percent between 1901 and 2014; in The United States it expanded 421 percent between 1880 and 2014; in Wales it expanded 2,100 percent between 1881 and 2014 and in Scotland it expanded 1,500 percent between 1881 and 2014.

O'Mahoney Last Name Statistics demography

The religious devotion of those bearing the last name is primarily Catholic (97%) in Ireland.

The amount O'Mahoney earn in different countries varies somewhat. In United States they earn 62.41% more than the national average, earning $70,079 USD per year and in Canada they earn 76.31% more than the national average, earning $87,594 CAD per year.

Phonetically Similar Names

SurnameSimilarityWorldwide IncidencePrevalency
O'Mayhoney951/
O'Mahony9413,286/
Omahoney94724/
O'Mahonny892/
O'Mohoney891/
Omahony881,537/
Omahonoy823/
O'Mohony822/
Omaahony821/
O'Mahoni821/
Omayone75217/
Osmaone751/
O'Mohany710/
Omoane6726/
Amaone671/
Omaona671/

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O'Mahoney Reference & Research

O'Mahony FamilyTree DNA Group - A group collating DNA test results for those who bear the surname, includes results of DNA tests and discussions.

O'Mahony FamilyTree DNA Project - A description of a group researching the paternal lines of men who bear the surname with the help of DNA analysis.

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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'Mahoney
  • 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