O'Mohony Surname

11,742,229th
Most Common
surname in the World

Approximately 2 people bear this surname

Most prevalent in:
Ireland
Highest density in:
Ireland

O'Mohony 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'Mohony 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
Ireland11:4,708,93929,543
United States11:362,458,9331,988,048
PlaceIncidenceFrequencyRank in Area
Ireland41:1,107,46726,093

O'Mohony 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
DNA test information
Display Statistics on:
  • Religious Adherence in:
    Ireland

O'Mohony Demographics

O'Mohony Religious Adherence
in Ireland

Sample size: 4 (1901)

Religious Adherence
in Ireland

View the most religious surnames in Ireland

O'Mohony Last Name Facts

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

O'Mohony is found in Ireland more than any other country/territory. It may also be found as a variant:. For other potential spellings of this name click here.

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

The surname is the 11,742,229th most frequent last name world-wide. It is borne by approximately 1 in 2,147,483,647 people. This last name is primarily found in The Americas, where 50 percent of O'Mohony live; 50 percent live in North America and 50 percent live in Anglo-North America.

This last name is most prevalent in Ireland, where it is borne by 1 people, or 1 in 4,708,939. In Ireland O'Mohony is most numerous in: Munster, where 100 percent reside. Excluding Ireland O'Mohony exists in one country. It is also found in The United States, where 50 percent reside.

O'Mohony Family Population Trend historical fluctuation

The occurrence of O'Mohony has changed through the years. In Ireland the number of people who held the O'Mohony last name declined 75 percent between 1901 and 2014.

O'Mohony Last Name Statistics demography

The religious devotion of those bearing the O'Mohony surname is primarily Catholic (100%) in Ireland.

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'Mohoney941/
O'Mahony8813,286/
O'Mohany880/
O'Mahoney823,674/
O'Mahonny822/
Omahony801,537/
Omahoney75724/
Omahonoy753/
Omaahony751/
O'Mahoni751/
Omoanyi674/
Emohone671/
Omohani671/
Show All Similar Surnames

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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'Mohony
  • 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