O'Mahony (

Old Irish Old Irish, also called Old Gaelic (, Ogham, Ogham script: ᚌᚑᚔᚇᚓᚂᚉ; ; ; or ), is the oldest form of the Goidelic languages, Goidelic/Gaelic language for which there are extensive written texts. It was used from 600 to 900. The ...

: ''Ó Mathghamhna'';

Modern Irish Irish (Standard Irish: ), also known as Irish Gaelic or simply Gaelic ( ), is a Celtic language of the Indo-European language family. It is a member of the Goidelic languages of the Insular Celtic sub branch of the family and is indigenous ...

: ''Ó Mathúna'') is the original name of the clan, with breakaway clans also spelled O'Mahoney, or simply Mahony, Mahaney and Mahoney, without the prefix. Brodceann O'Mahony was the eldest of the four sons of Mathghamain, known as "The Four Descendants". The O'Mahonys were Cenél nÁeda princes of the ancient

Eóganacht Raithlind Eóganacht Raithlind or Uí Echach Muman are a branch of the Eóganachta, the ruling dynasty of Munster in southwest Ireland during the 5th-10th centuries. They took their name from Raithlinn or Raithleann described around the area of Bandon, in ...

. They were also for a period kings of

Munster Munster ( or ) is the largest of the four provinces of Ireland, located in the south west of the island. In early Ireland, the Kingdom of Munster was one of the kingdoms of Gaelic Ireland ruled by a "king of over-kings" (). Following the Nor ...

and Desmond, and take their name from Mathghamhain, son of

Cian In Irish mythology, Cian or Cían (), nicknamed Scal Balb, was the son of Dian Cecht, the physician of the Tuatha Dé Danann, and best known as the father of Lugh Lamhfada. Cían's brothers were Cu, Cethen, and Miach. Cían was slain by th ...

, son of

Máel Muad mac Brain Máel Muad mac Brain (died 978), commonly anglicised Molloy and referred to in several texts as Maelmuadh son of Bran, was King of Munster, first possibly from 959 or alternatively 963 to around 970, when he may have been deposed (usurped) by Math ...

King of Munster The kings of Munster () ruled the Kingdom of Munster in Ireland from its establishment during the Irish Iron Age until the High Middle Ages. According to Gaelic traditional history, laid out in works such as the ''Book of Invasions'', the earli ...

from around 960 to 970, and then again from 976 to 978. From 970 to 976 he was king of Desmond. His son Cian became a close ally of

Brian Bóruma Brian Boru (; modern ; 23 April 1014) was the High King of Ireland from 1002 to 1014. He ended the domination of the High Kingship of Ireland by the Uí Néill, and is likely responsible for ending Viking invasions of Ireland. Brian Boru is me ...

and married his daughter Sadb. From this marriage descend the O'Mahonys. Their Dukedom of O'Mahony came to an end in 1740.

List of people

Bernard O'Mahoney Bernard O'Mahoney (born 15 March 1960, Dunstable, Bedfordshire, England) is an English author, security detail, and former soldier. After taking control of security at a nightclub he became associated with Tony Tucker, a drug dealer who was shot ...

, crime author *

Dave Allen (comedian) David Tynan O'Mahony (6 July 193610 March 2005), known professionally as Dave Allen, was an Irish comedian, satirist, and actor. He was best known for his observational comedy. Allen regularly provoked indignation by highlighting political hypoc ...

, Real name David Tynan O'Mahony. Famous Irish-English comedian. * Bertha Mahony, children's literature specialist * Charles Mahoney (disambiguation) *

Conor O'Mahony (priest) Conor O'Mahony (Irish language, Irish: ''Conchobhar Ó Mathghamhna''; 1594–28 February 1656) was an Irish Catholic priest, academic and author who belonged to the Society of Jesus. He was educated in Spain and Portugal, spending much of his lif ...

, Irish Jesuit priest * Cynthia L. Mahoney, Episcopalian nun and former chaplain in New York City, present at "Ground Zero" following the terrorist attacks of September 11, 2001 * Dan Mahoney (baseball), baseball player * Dan Mahoney (journalist), Irish-American journalist investigated for possible Communist activities * Dan Mahoney (politician), Australian politician *

Daniel O'Mahony Daniel O'Mahony (born 24 July 1973) is a half-British half-Irish author, born in Croydon. He is the oldest of five children, his siblings including Eoin O'Mahony of the band Hamfatter, and Madeleine O'Mahony, who has designed and made hats for C ...

, author * Darragh O'Mahony, rugby player *

Dennis Mahony Dennis Aloysius Mahony (January 20, 1821, in Rosscarbery, County Cork, Ireland – November 6, 1879) was one of the founders of the ''Dubuque Herald'' (now the ''Telegraph Herald''), a newspaper in Dubuque, Iowa, during the American Civil War. B ...

, newspaper founder * Dermot O'Mahony, Irish politician and farmer * Duncan O'Mahony, Canadian football player *

Eugene O'Mahony Eugene O'Mahony (1899 - 21 June 1951) was an Irish museum curator and entomologist who worked on Coleoptera, Mallophaga and Siphonaptera. Early life Eugene O'Mahony was born County Limerick in 1899. He moved to Dublin as a child, and due t ...

, Irish museum curator and entomologist * Flor O'Mahony, Irish politician *

Francis Sylvester Mahony Francis Sylvester Mahony (31 December 1804 – 18 May 1866), also known by the pen name Father Prout, was an Irish humorist and journalist. Life He was born in Cork (city), Cork, United Kingdom of Great Britain and Ireland, Ireland, to Martin ...

, Irish humorist * Frank P. Mahony, Australian artist * Frank Mahony, Australian public servant * George P. Mahoney, Catholic politician from Maryland *

Gwen O'Mahony Gwen O'Mahony (born November 2, 1972) is a Canadian politician, who represented Chilliwack-Hope in the Legislative Assembly of British Columbia from April 2012 until April 2013 as a member of the British Columbia New Democratic Party, and is now ...

, Canadian politician *

J. Daniel Mahoney John Daniel Mahoney (September 7, 1931 – October 23, 1996) was a United States circuit judge of the United States Court of Appeals for the Second Circuit. Education and career Born in Orange, New Jersey, Mahoney received a Bachelor of Arts d ...

, U.S. judge and founder of the Conservative Party * Jeremiah Mahoney (Medal of Honor), Medal of Honor recipient from the American Civil War *

Joan Mahoney Joan Mahoney (born 1943) is a legal scholar and former dean of two law schools. She served as Dean at Wayne State University Law School in Detroit, Michigan, from 1998 to 2003, the first woman law school dean in Michigan and one of the very few w ...

, American law professor *

Jock Mahoney Jacques Joseph O'Mahoney (February 7, 1919 – December 14, 1989), known professionally as Jock Mahoney, was an American actor and stuntman. He starred in two Action/Adventure television series, '' The Range Rider'' and '' Yancy Derringer''. H ...

, American actor and stuntman *

John Mahoney Charles John Mahoney (June 20, 1940 – February 4, 2018) was an English-American actor. He played retired police officer Martin Crane on the NBC sitcom ''Frasier'' from 1993 to 2004, receiving nominations for two Golden Globe Awards and two P ...

(1940–2018), English-American actor *

John O'Mahony John Francis O'Mahony (1815 – 7 February 1877) was an Irish scholar and the founding member of the Fenian Brotherhood in the United States, sister organisation to the Irish Republican Brotherhood. Despite coming from a reasonably wealthy fa ...

, scholar and founder of the Fenian Brotherhood *

John O'Mahony (Mayo politician) John Christopher O'Mahony (8 June 1953 – 6 July 2024) was an Irish Gaelic football manager and Fine Gael politician who served as a Senator from 2016 to 2020, after being nominated by the Taoiseach. He was a Teachta Dála (TD) for the Mayo ...

* John Keefer Mahony, Canadian recipient of the Victoria Cross * Joseph C. O'Mahoney, United States Senator from Wyoming *

Katharine A. O'Keeffe O'Mahoney Katharine O'Mahoney ( Katharine Aloysia O'Keeffe; 1852/1855 – January 2, 1918) was an Irish-born American educator, lecturer, and writer. A teacher of poetry to Robert Frost, she was the author of ''Famous Irishwomen'' (1907). O'Mahoney was o ...

(1855–1918), Irish-born American educator, lecturer, writer, editor *

Margaret O'Mahony Margaret O'Mahony is an Irish civil engineer. She is the Professor of Civil Engineering at Trinity College Dublin. O'Mahony completed a bachelor of engineering in civil engineering at NUI Galway and a doctorate from the Department of Engineering ...

, Irish civil engineer * Margaret Murphy O'Mahony (born 1969), Irish politician *

Marion Mahony Griffin Marion Mahony Griffin (; February 14, 1871 – August 10, 1961) was an American architect and artist. She was one of the first licensed female architects in the world, and is considered an original member of the Prairie School. Her work in ...

, American architect and artist * Maureen Mahoney, appellate lawyer *

Patricia Mahoney Patricia Alice Mahoney is an American diplomat who had served as the United States Ambassador to the Central African Republic. She previously served as the United States Ambassador to Benin. Early life and education Mahoney earned her Bachelor o ...

, American diplomat *

Patrick Mahoney Patrick Mahoney VC (c. 1827 – 30 October 1857) was an Irish recipient of the Victoria Cross, the highest and most prestigious award for gallantry in the face of the enemy that can be awarded to British and Commonwealth forces. Details He w ...

, Irish recipient of the Victoria Cross *

Pat Mahoney Patrick Morgan (Pat) Mahoney, (January 20, 1929 – June 8, 2012) was a Canadians, Canadian judge, politician, lawyer and businessman. Mahoney was first elected to parliament in the 1968 Canadian federal election, 1968 election as the Libe ...

, PC, Canadian judge, politician, lawyer and businessman *

Paul Mahoney (American lawyer) Paul G. Mahoney (born 1959) is an American law professor who worked as the dean of the University of Virginia School of Law from July 1, 2008 to July 1, 2016. He succeeded John Calvin Jeffries as Dean, and was succeeded by Risa L. Goluboff. E ...

, American law professor *

Paul Mahoney (English judge) Sir Paul John Mahoney Order of St Michael and St George, KCMG (born 1946) is a British jurist who was a Judge of the European Court of Human Rights. He was the first President of European Union Civil Service Tribunal (2005–2011). Education Mahon ...

, British judge of the European Court of Human Rights *

Peter O'Mahony Peter James O'Mahony (born 17 September 1989) is an Irish former rugby union player who played as a flanker. O'Mahony played as a flanker. During his career, O'Mahony has captained Presentation Brothers College, Ireland U18, Ireland U20, ...

, rugby player * Pierce Charles de Lacy O'Mahony, Irish Protestant Nationalist, philanthropist, politician and MP *

Roger Mahony Roger Michael Mahony (born February 27, 1936) is an American Catholic retired prelate who served as Archbishop of Los Angeles from 1985 to 2011. He previously served as an auxiliary bishop of the Diocese of Fresno from 1975 to 1980 and Bis ...

, American Cardinal of the Roman Catholic Church * Rosemary Mahoney, American writer of non-fiction narrative *

Seán O'Mahony Seán O'Mahony (also John O'Mahoney) (20 October 1872 – 28 November 1934) was an Irish Sinn Féin politician and member of the First and Second Dáil. He was born as John Mahony in Logan Street, Thomastown, County Kilkenny, to James Mahony, ...

, Irish politician * Sean O'Mahony (Gaelic footballer) (born 1976), Gaelic footballer * Sean O'Mahony (journalist) (1932–2020), British music writer and magazine editor *

Steve Mahoney Steven W. Mahoney, (born 18 July 1947) is a Canadians, Canadian politician. He was a member of the Legislative Assembly of Ontario from 1987 to 1995, and a member of the House of Commons of Canada from 1997 to 2004. In the latter capacity, he ...

, Canadian politician *

Suzanne Somers Suzanne Marie Somers (; October 16, 1946 – October 15, 2023) was an American actress, author, and businesswoman. She played the television roles of Chrissy Snow on ''Three's Company'' (1977–1981) and Carol Foster Lambert on '' Step by Step' ...

née Mahoney, U.S. actress * Thomas O'Mahony, politician *

Walter J. Mahoney Walter J. Mahoney (March 10, 1908 in Buffalo, New York – March 1, 1982) was an American lawyer and politician. Life He graduated from Canisius College in 1930, and from the University at Buffalo Law School. He was admitted to the bar in 1934, a ...

, American lawyer and politician * William Mahony (disambiguation) * William B. Mahoney, U.S. journalist and substance-abuse counselor ;Places * Dunlough Castle * Mahoney Lake * Mahoney's Corner, Nova Scotia *

Bishop James Mahoney High School Bishop James Mahoney High School (BJM) is a high school serving grades 9 to 12, located in the Lawson Heights neighbourhood in the north end of Saskatoon, Saskatchewan, Canada. It is also known as Bishop Mahoney High School. It is the only Catholic ...

* Dunmanus Castle ;Flying machines and equations * Beck-Mahoney Sorceress *

Benjamin–Bona–Mahony equation The Benjamin–Bona–Mahony equation (BBM equation, also regularized long-wave equation; RLWE) is the partial differential equation :u_t+u_x+uu_x-u_=0.\, This equation was studied in as an improvement of the Korteweg–de Vries equation (KdV e ...

Mahoney tables The Mahoney tables are a set of reference tables used in architecture, used as a guide to climate-appropriate design. They are named after architect Carl Mahoney, who worked on them together with John Martin Evans, and Otto Königsberger. They were ...

References

* Byrne, Francis J., ''Irish Kings and High-Kings''. Four Courts Press. 2nd edition, 2001. * Charles-Edwards, Thomas M., ''Early Christian Ireland''. Cambridge University Press. 2000. * MacLysaght, Edward, ''Irish Families: Their Names, Arms and Origins''. Irish Academic Press. 4th edition, 1998. * O'Hart, John
Irish Pedigrees
Dublin: James Duffy and Co. 5th edition, 1892. * Todd, James Henthorn (ed. and tr.)
Cogadh Gaedhel re Gallaibh: The War of the Gaedhil with the Gaill
Longmans. 1867. (pedigree: pg. 248)

External links

The O Mahony Society
Updated website for the society *
O'Mahony Pedigree
at Library Ireland
Famille O'Mahony
at GeneaWiki (in French) {{surname Surnames of Irish origin

List of people

See also

References

External links