MCMAHON
Recorded variant spellings include Mc Mahon, Mc'Mahon, Mc'mahon, Mcmahon
McMahon is a pronounced Irish surname of Gaelic origin that is typically reconstructed from the ancient name Mac Mathghamhna. The first element, Mac, denotes a son or descendant, while the second element, Mathghamhain, derives from the Old Irish word math meaning bear. Hence the name essentially translates as son of the bear.
The earliest documentary reference to the surname appears in the Early Medieval Records of Ireland, where the spelling MacMahon is dated to 1170. This early attestation occurs during the reign of Rory O'Connor, the last native High King of Ireland, and confirms the name's deep roots within the Irish literary tradition.
In the Anglo-Irish period, the clan was divided into at least two distinct septs. The first portion of the family settled in western County Clare and was descended from Mahon, son of Murtagh Mor O'Brien, the famed 12th‑century King of Ireland who died in 1119. In this region the MacMahons exercised lordship over Corcabaskin, a territory that still records the name as common today. The last recognised chief of this branch was killed at the Battle of Kinsale in 1602.
The second major branch served as lords of Oriel in the 13th century. Oriel, a historical kingdom comprising County Armagh, Monaghan and parts of South Down, Louth and Fermanagh, was a significant political entity in medieval Ulster. In contemporary surveys the MacMahon surname ranks third among the most popular Irish surnames within County Monaghan.
Several prominent individuals have carried the name through history. Bernard MacMahon (1680–1747) served as an Archbishop of Armagh, preceded in that office by his tenure as a bishop in the neighbouring diocese of Clogher. Another distinguished bearer was Edmond Patrice, Compte de MacMahon, whose life (1808–1893) encompassed service as Marshal of France and as President of the Third Republic for six years.
The family coat of arms has been described as a silver shield bearing three red lions passant reguardant in pale; the lions are armed and langued azure. The imagery conveys martial prowess and noble standing, attributes traditionally associated with the MacMahon septs.
Over centuries the name has undergone various anglicisations, generating spellings such as Mahon, Mathuna and, less commonly, McMahan, McManus, McMenamin and MacMathan. Regional dialects and scribal variations are believed to account for these differences, and some travellers also adopted the shortened form Mann in later genealogical records.
Following the Great Famine of the mid‑19th century, a notable wave of emigration carried members of the MacMahon lineage overseas. As a result, the surname now appears in several English‑speaking countries, including the United Kingdom, the United States, Canada, Australia and New Zealand. Despite this diaspora, the name remains most prevalent in Ireland, where it continues to reflect deep cultural heritage and historic identity.
In contemporary popular culture the surname has been associated with professional wrestling, largely through the prominence of Vince McMahon and his family within the World Wrestling Entertainment empire. This modern association, however, does not diminish the centuries‑old heritage that informs its present-day usage.
Collectively, the information gathered from primary historical sources and scholarly interpretation confirms that McMahon is a surname of considerable antiquity, borne by noble septs, clergy, military leaders and a range of modern citizens. The continuity of its use over time underscores the enduring legacy of Irish surnames within the broader tapestry of British Isles history.
Typical given names associated with the McMahon surname
Male
- David
- James
- John
- Michael
- Patrick
- Paul
- Peter
- Stephen
- Thomas
- William
Female
- Anne
- Catherine
- Claire
- Elizabeth
- Lisa
- Margaret
- Mary
- Patricia
- Sarah
- Susan
Similar and related surnames
Related and similar names are generated algorithmically based on the spelling, and may not necessarily share an etymology.
How to communicate the surname McMahon in...
Braille
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Morse
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Semaphore
Did you know?
According to a survey carried out by Democracy Club, politicians and candidates with the surname McMahon are most likely to say that their favourite biscuit is a Custard Cream.
There are approximately 16,293 people named McMahon in the UK. That makes it the 544th most common surname in Britain. Around 250 in a million people in Britain are named McMahon.
Surname type: From name of parent
Origin: Celtic
Region of origin: British Isles
Country of origin: Ireland
Religion of origin: Christian
Language of origin: Gaelic
Famous people named McMahon
- Vince McMahon - American professional wrestling promoter
- Ella McMahon - Singer-songwriter
- Shane McMahon - American businessman and professional wrestler
- Steve McMahon - Football player
- Julian McMahon - Australian actor and former fashion model
- Ed McMahon - American announcer, game show host, actor, spokesman (1923 to 2009)
- Jim McMahon - Labour Party politician
- Linda McMahon - 25th Administrator of the Small Business Administration and professional wrestling magnate
- Mike McMahon - Comic artist
- Tony McMahon - Football player
- Malcolm McMahon - Catholic bishop
- Henry McMahon - Diplomat and Indian Army officer (1862 to 1949)
- Joe McMahon - Gaelic football player
- Gerry McMahon - Northern Irish football player
- April McMahon - Linguist
- Paul McMahon - Cricketer
- Sam McMahon - Football player
- Steve McMahon - Football player
- Siobhan McMahon - Politician
- Sandy McMahon - Scottish football player (1870 to 1916)
Names and descriptions courtesy of Wikipedia, and may contain errors. This is not intended to be an exhaustive list of every famous person with this name.