This surname may be extinct

O'Mohany 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'Mohany Surname Distribution Map

PlaceIncidenceFrequencyRank in Area
Ireland31:1,476,62229,385

O'Mohany 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

Phonetically Similar Names

SurnameSimilarityWorldwide IncidencePrevalency
O'Mohony882/
O'Mohoney821/
Omoanyi804/
Omohani801/
O'Mahony7513,286/
O'Mahoney713,674/
Omoane7126/
O'Mahonny712/
Omoana711/
Omahony671,537/
Amoanyi67348/
Homoane671/
Homoana671/
Omoauna671/
Omahoney63724/
Omojiana6316/
Omahonoy633/
Omaahony631/
O'Mahoni631/
Homhouane5917/
Houmouane592/
Oumouaana591/
Amoani572,326/
Amoana571/
Omaona571/
Hoummouane565/
Amouane5319/
Amouani537/
Hamoani531/
Emohone531/
Osmaone531/
Hamouane5031/
Hemouani501/
Homauoni501/
Hemouane501/

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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
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  • 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'Mohany
  • 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