Irish Surnames

Irish names are used on the island of Ireland as well as elsewhere in the Western World as a result of the Irish diaspora. See also about Irish names.
There are 493 names matching your criteria.

AHEARN     Irish
Anglicized form of Ó HEACHTHIGHEARNA.
AHEARNE     Irish
Anglicized form of Ó HEACHTHIGHEARNA.
BEIRNE     Irish
Variant of O'BYRNE.
BERNE     Irish
Variant of O'BYRNE.
BOYLE     Irish
From Irish Ó Baoighill meaning "descendant of Baoigheall". The meaning of the given name Baoigheall is uncertain, but it is thought to be connected to Irish geall meaning "pledge".
BRADEN     Irish
Anglicized form of Irish Ó Bradáin meaning "descendant of BRADÁN".
BRADY     Irish
Anglicized form of the Irish name Ó Brádaigh meaning "descendant of BRÁDACH".
BRANNON     Irish
From Irish Mac Branain meaning "son of BRAN (1)".
BREEN     Irish
Anglicized form of Irish Ó Braoin meaning "descendant of Braon", a byname meaning "rain, moisture, drop".
BRENNAN     Irish
From Irish Ó Braonáin which means "descendant of Braonán", a byname meaning "rain, moisture, drop" (with a diminutive suffix).
BROGAN     Irish
Occupational name derived from Irish bróg meaning "shoe".
BUCKLEY (2)     Irish
From Irish Ó Buachalla meaning "descendant of Buachaill", a nickname meaning "cowherd, servant".
BURKE     English, Irish
Derived from Middle English burgh meaning "fortress, fortification, castle". It was brought to Ireland in the 12th century by the Norman invader William FitzAdelm de Burgo.
BURNS (2)     Irish
Variant of O'BYRNE.
BUTLER     English, Irish
Occupational name derived from Norman French butiller "wine steward", ultimately from Late Latin butticula "bottle". A famous bearer of this surname is the fictional character Rhett Butler, created by Margaret Mitchell for her novel 'Gone with the Wind' (1936).
BYRNE     Irish
Variant of O'BYRNE.
BYRNES     Irish
Variant of O'BYRNE.
CALLAGHAN     Irish
Anglicized form of Irish Ó Ceallacháin meaning "descendant of CEALLACHÁN".
CALLAHAN     Irish
Variant of CALLAGHAN.
CAOMHÁNACH     Irish
Irish Gaelic form of KAVANAGH.
CAREY     Irish
Anglicized form of Irish Ó Ciardha meaning "descendant of CIARDHA".
CARMODY     Irish
Anglicized form of Irish Ó Cearmada which means "descendant of Cearmaid", a Gaelic given name.
CARRAN     Irish
Variant of CURRAN.
CARROLL     Irish
From the given name CEARBHALL. A famous bearer was Lewis Carroll (1832-1898), whose real name was Charles Lutwidge Dodgson, the author of 'Alice's Adventures in Wonderland'.
CARY     Irish
Variant of CAREY.
CASEY     Irish
Anglicized form of Irish Ó Cathasaigh meaning "descendant of CATHASACH".
CASSIDY     Irish
From Irish Ó Caiside meaning "descendant of Caiside". Caiside is a given name meaning "curly haired".
CAVAN     Irish
Anglicized form of the Irish Ó Caoimháin meaning "descendant of CAOMHÁN".
CAVANAGH     Irish
Variant of KAVANAGH.
CAVANAH     Irish
Variant of KAVANAGH.
CAVANAUGH     Irish
Variant of KAVANAGH.
CLEARY     Irish
From Irish cléireach meaning "clerk" (see CLARK).
CLERY     Irish
Variant of CLEARY.
CODY     Irish
Anglicized form of Irish Ó Cuidighthigh meaning "descendant of CUIDIGHTHEACH"... [more]
COGHLAN     Irish
Anglicized form of Ó COCHLÁIN.
COLEMAN     Irish, English
From the given name COLMÁN.
COLLINS (1)     Irish
Anglicized form of Ó COILEÁIN. A famous bearer was Michael Collins, an Irish nationalist leader who was assassinated in 1922.
CONNELL     Irish
Anglicized form of Irish Ó Conaill meaning "descendant of CONALL".
CONNELLY     Irish
Variant of CONNOLLY.
CONNOLLY     Irish
Anglicized form of Irish Ó Conghalaigh, which means "descendant of Conghalach". Conghalach is a nickname meaning "valiant".
CONNOR     Irish
Variant of O'CONNOR.
COONEY     Irish
From Irish Ó Cuana meaning "descendant of Cuana". Cuana probably means "handsome, elegant". The Cooney sept originated in County Tyrone.
CORCORAN     Irish
From Irish Ó Corcráin meaning "descendant of Corcrán", a given name derived from the Gaelic word corcair "purple".
COUGHLAN     Irish
Anglicized form of Ó COCHLÁIN.
COUGHLIN     Irish
Anglicized form of Ó COCHLÁIN.
CULLEN (2)     Irish
Anglicized form of Ó COILEÁIN or Ó CUILINN.
CUMMINS     English, Scottish, Irish
Means "descendant of Cuimin", a Breton name meaning "little bent one".
CURRAN     Irish
Anglicized form of Irish Ó Corraidhín meaning "descendant of CORRAIDHÍN".
DALEY     Irish
Variant of DALY.
DALY     Irish
Anglicized form of Irish Ó Dálaigh meaning "descendant of DÁLACH"... [more]
DAVIN     Irish
Variant of DEVIN (1).
DEASMHUMHAIN     Irish
Irish Gaelic form of DESMOND.
DEASÚN     Irish
Irish variant of DESMOND.
DELANEY (2)     Irish
Anglicized form of Irish Ó Dubhshláine meaning "descendant of DUBHSHLÁINE".
DELANY     Irish
Variant of DELANEY (2).
DEMPSEY     Irish
Anglicized form of Irish Ó Díomasaigh meaning "descendant of Díomasach", a given name meaning "proud".
DERMOTT     Irish
Variant of MCDERMOTT.
DESMOND     Irish
Anglicized form of the Gaelic Deasmhumhain meaning "South Munster", originally indicating a person who came from that region in Ireland.
DEVIN (1)     Irish
Anglicized form of the Gaelic surnames Ó DAMHÁIN or Ó DUBHÁIN.
DEVINE (1)     Irish
Variant of DEVIN (1).
DEVLIN     Irish
Anglicized form of the Irish Ó Doibhilin meaning "descendant of Doibhilin", a given name which may be derived from the Gaelic term dobhail meaning "unlucky".
DOHERTY     Irish
From the Irish Ó Dochartaigh meaning "descendant of Dochartach". The byname Dochartach means "obstructive".
DOLAN     Irish
From the Irish Ó Dubhshláin meaning "descendant of DUBHSHLÁINE".
DONAGHUE     Irish, Scottish
Variant of DONOGHUE.
DONNE     Scottish, Irish
From Gaelic donn meaning "brown", a nickname for a person with brown hair.
DONNELL     Irish
Variant of O'DONNELL.
DONNELLY     Irish
From Irish Ó Donnghaile meaning "descendant of Donnghal". The given name Donnghal means "brown valour", from donn "brown" and gal "valour"... [more]
DONOGHUE     Irish
From Irish Ó Donnchadha meaning "descendant of DONNCHADH".
DONOHOE     Irish
Variant of DONOGHUE.
DONOHUE     Irish
Variant of DONOGHUE.
DONOVAN     Irish
Anglicized form of the Irish name Ó Donndubháin meaning "descendant of DONNDUBHÁN".
DOUGHERTY     Irish
Variant of DOHERTY.
DOYLE     Irish
From the Irish Ó Dubhghaill, which means "descendant of DUBHGHALL". A famous bearer was Sir Arthur Conan Doyle (1859-1930), the author of the Sherlock Holmes mystery stories.
DRISCOLL     Irish
From Irish Ó hEidirsceóil meaning "descendant of the messenger".
DUANE     Irish
Anglicized form of the Gaelic Ó DUBHÁIN.
DUFFY (1)     Irish
Derived from Irish Ó Dubhthaigh meaning "descendant of DUBHTHACH". Their original homeland was Monaghan where the surname is still the most common; they are also from Donegal and Roscommon.
DUFFY (2)     Scottish, Irish
Anglicized form of MAC DUIBHSHÍTHE.
DUNN     English, Scottish, Irish
Derived from Old English dunn "dark" or Gaelic donn "brown", referring to hair colour or complexion.
DURNIN     Irish
From Irish Ó Doirnáin meaning "descendant of Doirnín", a given name meaning "little fist".
FANNON     Irish
From the Irish Ó Fionnáin which meant "descendant of FIONN".
FARRELL     Irish
Anglicized form of Irish Ó Fearghail meaning "descendant of FEARGHAL".
FERGUSON     Irish, Scottish
Means "son of FERGUS".
FINN     Irish
Derived from the given name FIONN.
FINNEGAN     Irish
Anglicized form of Irish Ó Fionnagáin meaning "descendant of Fionnagán". The given name Fionnagán is a diminutive of FIONN.
FINNIN     Irish
Diminutive form of FINN.
FITZGERALD     Irish
Means "son of GERALD" in Anglo-Norman French. It was brought to Ireland with William the Conqueror.
FITZPATRICK     Irish
Means "son of PATRICK" in Anglo-Norman French.
FITZSIMMONS     Irish
Means "son of Simmons" or "son of SIMON" in Anglo-Norman French.
FLANAGAN     Irish
From Irish Ó Flannagáin meaning "descendant of Flannagán". Flannagán is a given name meaning "red". From County Roscommon in Ireland, it has many other spellings.
FLANAGON     Irish
Variant of FLANAGAN.
FLYNN     Irish
Anglicized form of Irish Ó Floinn meaning "descendant of FLANN".
FOLEY     Irish
Irish meaning "pirate" or "marauder".
FRIEL     Irish
From the Irish Ó Frighil meaning "descendant of FEARGHAL".
FYLAN     Irish
Variant of WHELAN.
GALLAGHER     Irish
Anglicized form of the Irish Ó Gallchobhair meaning "descendant of GALLCHOBHAR".
GORMAN (2)     Irish
From the Irish Ó Gormáin meaning "descendant of Gormán". The given name Gormán means "little blue one".
GUINNESS     Irish
Variant of MCGUINNESS. The name is well known because of the Guinness brand of ale, established in 1759 by Arthur Guinness.
HADEN     English, Irish
Variant of HAYDEN (1).
HALLORAN     Irish
From Irish Ó hAllmhuráin meaning "descendant of Allmhurán". The given name Allmhurán means "stranger from across the sea".
HANEGAN     Irish
Variant of O'HANNAGAIN.
HANIGAN     Irish
Variant of O'HANNAGAIN.
HANNIGAN     Irish
Variant of O'HANNAGAIN.
HANNIGEN     Irish
Variant of O'HANNAGAIN.
HAYDEN (2)     Irish
Anglicized form of Ó HÉIDEÁIN or Ó HÉIDÍN.
HAYES (2)     Irish
Anglicized form of Irish Ó hAodha meaning "descendant of AODH".
HEARN     Irish
Anglicized form of Ó HEACHTHIGHEARNA.
HEFFERNAN     Irish
From Irish Ó hIfearnáin meaning "descendant of Ifearnán". The byname Ifearnán means "little demon".
HICKEY     Irish
Anglicized form of Irish Ó hÍcidhe meaning "descendant of the healer".
HIGGINS     Irish
From Irish Ó hUiginn which means "descendant of Uiginn". Uiginn is a byname meaning "Viking".
HINES     Irish
Anglicized form of Irish Ó hEidhin meaning "descendant of Eidhin", a given name or byname of unknown origin.
HOGAN     Irish
From Irish Ó hÓgáin meaning "descendant of Ógán". The given name Ógán is a diminutive of óg meaning "young".
HUGHES (2)     Scottish, Irish
Anglicized form of MAC AODHA.
HYLAND (2)     Irish
Variant of WHELAN.
HYNES     Irish
Variant of HINES.
IVERS     English, Irish
Patronymic derived from the given name IVOR.
KAVANAGH     Irish
Derived from the Irish Gaelic name Caomhánach, which means "a student of saint CAOMHÁN"... [more]
KAVANAH     Irish
Variant of KAVANAGH.
KAVANAUGH     Irish
Variant of KAVANAGH.
KEARNEY     Irish
From the Irish name Ó Ceithearnaigh meaning "descendant of Ceithearnach", a given name meaning "warrior".
KEEFE     Irish
Anglicized form of the Irish Ó Caoimh meaning "descendant of CAOMH".
KEEGAN     Irish
From Irish Mac Aodhagáin meaning "descendant of Aodhagán". The given name Aodhagán is a double diminutive of AODH.
KELLEY     Irish
Variant of KELLY (1).
KELLY (1)     Irish
Anglicized form of Irish Ó Ceallaigh meaning "descendant of CEALLACH".
KENNEDY     Irish
From the Irish name Ó Cinnéidigh meaning "descendant of CENNÉTIG"... [more]
KILDUFF     Irish
From the Irish Mac Giolla Dhuibh meaning "son of the black-haired man".
KILLOUGH     Irish
Indicated a person who was from Killough (County Down, Northern Ireland) or Killough (Wicklow, Ireland). The place name Killough means "church on the lake", derived from the Irish cill "church" and locha "lake".
LANE (3)     Irish
From Irish Ó Luain meaning "descendant of Luan", a given name meaning "warrior".
LANNON     Irish
Variant of LENNON.
LEARY     Irish
Variant of O'LEARY.
LENNON     Irish
Anglicized form of the Irish name Ó Leannáin, which means "descendant of Leannán". The given name Leannán means "lover"... [more]
LYNCH     Irish
From Irish Ó Loingsigh meaning "descendant of Loingseach", a given name meaning "mariner".
MAC ALASTAIR     Scottish, Irish
Gaelic form of MCALISTER.
MAC AN ABA     Irish, Scottish
Gaelic form of MCNAB.
MAC AN BHAIRD     Irish
Irish Gaelic form of WARD (2).
MAC AN TSAGAIRT     Irish, Scottish
Gaelic form of TAGGART.
MAC AODHA     Scottish, Irish
Means "son of AODH" in Gaelic.
MAC AODHAGÁIN     Irish
Irish Gaelic form of KEEGAN.
MAC BRANAIN     Irish
Irish Gaelic form of BRANNON.
MACBRIDE     Irish
Anglicized form of MAC GIOLLA BHRIGHDE.
MAC CÁBA     Irish, Scottish
Irish Gaelic form of MCCABE.
MACCAILÍN     Irish, Scottish
Means "son of CAILEAN" in Gaelic.
MACCARRICK     Irish
Means "son of Cúcharraige" in Irish. The given name Cúcharraige is composed of "hound" and carraig "rock".
MACCARTHY     Irish
Means "son of CÁRTHACH" in Irish.
MAC CLÉIRICH     Irish
Means "son of the clerk".
MACCLERY     Irish
Anglicized form of MAC CLÉIRICH.
MAC CNÁIMHÍN     Irish
Means "son of Cnámh". The Irish given name Cnámh means "bone".
MAC CONMARA     Irish
Gaelic form of MCNAMARA.
MAC CORMAIC     Irish, Scottish
Gaelic form of MCCORMICK.
MACCOUGHLAN     Irish
Means "son of Cochlán". The given name Cochlán is derived from Irish cochal "cape" or "hood".
MACDERMOTT     Irish
Variant of MCDERMOTT.
MAC DHUIBHINSE     Irish
Irish Gaelic form of VINCENT (2).
MAC DIARMADA     Irish
Irish Gaelic form of MCDERMOTT.
MAC DOMHNAILL     Scottish, Irish
Gaelic form of MACDONALD.
MAC DUIBHSHÍTHE     Scottish, Irish
Means "son of Duibhshíth" in Gaelic. The given name Duibhshíth means "black peace".
MAC EOGHAIN     Irish, Scottish
meaning "son of EOGHAN" in Gaelic.
MAC GHABHANN     Irish
Means "son of the smith" in Irish.
MACGINNIS     Irish
Variant of MCGUINNESS.
MAC GIOLLA BHRIGHDE     Irish
Means "son of the servant of BRIGHID" in Irish.
MAC GIOLLA DHUIBH     Irish
Irish Gaelic form of KILDUFF.
MAC GIOLLA EOIN     Irish
Irish Gaelic form of MCLAIN.
MAC GIOLLA FHAOLÁIN     Irish
Irish Gaelic form of MCCLELLAND.
MACGOWAN     Irish
Anglicized form of MAC GHABHANN.
MACGRORY     Irish, Scottish
Variant of MCCRORY.
MACGUINNESS     Irish
Variant of MCGUINNESS.
MACGUIRE     Irish
Variant of MCGUIRE.
MACIOMHAIR     Irish, Scottish
Gaelic form of MCIVER.
MACIVER     Irish, Scottish
Variant of MCIVER.
MACKAY     Scottish, Irish
Anglicized form of MAC AODHA.
MACLEAN     Scottish, Irish
Variant of MCLAIN.
MAC MAGHNUIS     Irish
Irish Gaelic form of MCMANUS.
MACMATHAN     Irish
Variant of MCMAHON.
MAC MATHGHAMHNA     Irish
Irish Gaelic form of MCMAHON.
MAC NAOIMHÍN     Irish, Scottish
Means "son of NAOMHÁN" In Gaelic.
MAC NEACHTAIN     Irish, Scottish
Means "son of NECHTAN" in Gaelic.
MACNEIL     Irish, Scottish
Variant of MCNEIL.
MAC NÉILL     Irish, Scottish
Gaelic form of MCNEIL.
MACNEVIN     Irish
Anglicized form of MAC NAOIMHÍN.
MAC NIADH     Irish
Means "son of Niadh" in Irish. The given name Niadh means "champion".
MAC NIALL     Irish
Variant of MCNEIL.
MAC PHARLAIN     Irish, Scottish
Gaelic form of MCFARLANE.
MACQUEEN     Irish, Scottish
Anglicized form of MACSHUIBHNE.
MACRAE     Irish, Scottish
Variant of MCCRAE.
MAC REACHTAIN     Irish, Scottish
Ulster variant of MAC NEACHTAIN.
MAC RUAIDHRÍ     Irish, Scottish
Gaelic form of MCCRORY.
MACSHUIBHNE     Irish, Scottish
Means "son of SUIBHNE" in Gaelic.
MAC THAIDHG     Irish, Scottish
Gaelic form of MCCAIG.
MAC UILEAGÓID     Irish
Gaelic form of MCELLIGOTT.
MADDEN     Irish
Anglicized form of Ó MADAIDHÍN.
MADIGAN     Irish
Anglicized form of Ó MADAIDHÍN.
MAG AONGHUIS     Irish
Irish Gaelic form of MCGUINNESS.
MAGEE     Scottish, Irish
Anglicized form of MAC AODHA.
MAGORIAN     Irish
Possibly a variant of MCGOWAN or MCGOVERN.
MAG RAITH     Irish, Scottish
Gaelic form of MCCRAE.
MAG SHAMHRADHÁIN     Irish
Irish Gaelic form of MCGOVERN.
MAG UIDHIR     Irish
Irish Gaelic form of MCGUIRE.
MAGUIRE     Irish
Variant of MCGUIRE.
MAHONEY     Irish
Anglicized form of the Irish Ó Mathghamhna meaning "descendant of MATHGHAMHAIN".
MALLEY     Irish
Anglicized form of Ó MÁILLE.
MALLON     Irish
Variant of MALONE.
MALLOYE     Irish
Variant of MOLLOY.
MALONE     Irish
Anglicized form of Irish Ó Maoil Eoin which means "descendant of a disciple of Saint JOHN".
MARKEY     Irish
From the Irish Ó Marcaigh meaning "descendant of Marcach", a given name meaning "horse rider".
MCADAMS     Scottish, Irish
Means "son of ADAM" in Gaelic.
MCAFEE     Scottish, Irish
Anglicized form of MAC DUIBHSHÍTHE.
MCALISTER     Scottish, Irish
From Gaelic Mac Alastair meaning "son of ALISTAIR".
MCBRIDE     Irish
Anglicized form of MAC GIOLLA BHRIGHDE.
MCCABE     Irish, Scottish
Means "son of Cába", where Cába is a given name meaning "cape".
MCCAIG     Irish, Scottish
Anglicized form of Gaelic Mac Thaidhg meaning "son of TADHG".
MCCLEARY     Irish
Anglicized form of MAC CLÉIRICH.
MCCLELLAND     Irish, Scottish
From Gaelic Mac Giolla Fhaoláin meaning "son of the servant of FAOLÁN".
MCCONNELL     Scottish, Irish
Derived from Gaelic Mac Domhnaill (see MACDONALD).
MCCORMICK     Irish, Scottish
From Gaelic Mac Cormaic meaning "son of CORMAC".
MCCRACKEN     Irish, Scottish
Anglicized form of Gaelic Mac Reachtain, Ulster variant of MAC NEACHTAIN.
MCCRAE     Irish, Scottish
From the Gaelic Mag Raith meaning "son of Rath", a given name meaning "prosperity" or "grace".
MCCREERY     Irish, Scottish
Variant of MCCRORY.
MCCRORY     Irish, Scottish
Anglicized form of Gaelic Mac Ruaidhrí meaning "son of RUAIDHRÍ".
MCCUNE     Irish
Anglicized form of MAC EOGHAIN.
MCDERMOTT     Irish
Means "son of DIARMAID". The McDermotts were nobility in the Kingdom of Connaught, a province in Ireland.
MCELLIGOTT     Irish
Anglicized form of the Gaelic name Mac Uileagóid meaning "son of Uileagóid", a diminutive of UILLEAG.
MCFARLAND     Irish, Scottish
Variant of MCFARLANE.
MCFARLANE     Irish, Scottish
Anglicized form of Gaelic Mac Pharlain meaning "son of PARTHALÁN".
MCFEE     Scottish, Irish
Anglicized form of MAC DUIBHSHÍTHE.
MCGEE     Irish, Scottish
Anglicized form of MAC AODHA.
MCGILL     Irish, Scottish
Means "son of the foreigner" in Gaelic, derived from gall "foreigner".
MCGINNIS     Irish
Variant of MCGUINNESS.
MCGOVERN     Irish
Anglicized form of Gaelic Mag Shamhradháin meaning "son of Samhradháin", a given name meaning "summer".
MCGOWAN     Irish
Anglicized form of MAC GHABHANN.
MCGUINNESS     Irish
Anglicized form of Irish Mag Aonghuis meaning "son of AONGHUS".
MCGUIRE     Irish
Anglicized form of Irish Mag Uidhir meaning "son of Odhar", a given name meaning "pale-coloured".
MCIVER     Irish, Scottish
Means "son of IVOR" in Irish.
MCKAY     Scottish, Irish
Anglicized form of MAC AODHA.
MCKOWEN     Irish
Anglicized form of MAC EOGHAIN.
MCLAIN     Scottish, Irish
Anglicized form of Gaelic Mac Giolla Eoin meaning "son of the servant of EOIN".
MCLEAN     Scottish, Irish
Variant of MCLAIN.
MCMAHON     Irish
Anglicized form of Mac Mathghamhna meaning "son of MATHGHAMHAIN".
MCMANUS     Irish
Anglicized form of Gaelic Mac Maghnuis meaning "son of MÁGHNUS".
MCNAB     Irish, Scottish
Anglicized form of Gaelic Mac an Aba meaning "son of the abbot".
MCNABB     Irish, Scottish
Variant of MCNAB.
MCNAMARA     Irish
From Irish Mac Conmara meaning "son of Conmara". The given name Conmara is composed of "hound" and muir "sea".
MCNAUGHTON     Irish, Scottish
Anglicized form of MAC NEACHTAIN.
MCNEAL     Irish, Scottish
Variant of MCNEIL.
MCNEE     Irish
Anglicized form of MAC NIADH.
MCNEIL     Irish, Scottish
Anglicized form of Gaelic Mac Néill meaning "son of NIALL".
MCNEILL     Irish, Scottish
Variant of MCNEIL.
MCNIALL     Irish
Variant of MCNEIL.
MCNIEL     Irish, Scottish
Variant of MCNEIL.
MCNIVEN     Irish
Anglicized form of MAC CNÁIMHÍN.
MCPHEE     Scottish, Irish
Anglicized form of MAC DUIBHSHÍTHE.
MCQUEEN     Irish, Scottish
Anglicized form of MACSHUIBHNE.
MCRAE     Irish, Scottish
Variant of MCCRAE.
MCREYNOLDS     Scottish, Irish
Means "son of REYNOLD" in Gaelic.
MCTAGGART     Irish, Scottish
Variant of TAGGART.
MEANEY     Irish
Variant of O'MOONEY.
MILLIGAN     Irish, Scottish
From the Gaelic given name Maolagán, a derivative of maol meaning "bald" or "tonsured".
MITCHELL     English, Irish, Scottish
Derived from the given name MICHAEL.
MOFFETT     Scottish, Irish
From a place name in Scotland meaning "long field".
MOHAN     Irish
Anglicized form of Irish Ó Mocháin meaning "descendant of MOCHÁN".
MOLLOWN     Irish
Variant of MALONE.
MOLLOY     Irish
Anglicized form of Ó MAOLMHUAIDH or Ó MAOL AODHA.
MOLONEY     Irish
From Irish Ó Maol Dhomhnaigh meaning "descendant of a church servant".
MONAGHAN     Irish
Variant of MONAHAN.
MONAHAN     Irish
From Irish Ó Manacháin meaning "descendant of Manacháin". The given name Manacháin meant "little monk", from manach "monk" and a diminutive suffix.
MONDAY (3)     Irish
Anglicized form of MAC GIOLLA EOIN. The last part of the surname was mistakenly taken as the Gaelic word for "Monday", Luain.
MOONEY     Irish
Variant of O'MOONEY.
MORIARTY     Irish
From Irish Ó Muircheartach meaning "descendant of MUIRCHERTACH". This was the surname given by Sir Arthur Conan Doyle to the antagonist in the Sherlock Holmes series.
MORRIS     English, Irish, Scottish, Welsh
Derived from the given name MAURICE.
MULLANE     Irish
Variant of MULLEN.
MULLEN     Irish
From the Irish Ó Maoláin meaning "descendant of Maolán". The given name Maolán meant "devotee".
MULLIGAN     Irish
Variant of MILLIGAN.
MULLINS (2)     Irish
Variant of MULLEN.
MULLOY     Irish
Variant of MOLLOY.
MULRENNAN     Irish
From the Irish Maol Bhréanáin meaning "devotee of Saint BRENDAN". The name originated in the North West of Ireland, in Roscommon.
MULRYAN     Irish
Anglicized form of Ó MAOIL RIAIN.
MURDOCK     Irish
Derived from the given name MURCHADH.
MURPHY     Irish
Anglicized form of Irish Ó Murchadha meaning "descendant of MURCHADH".
NEIL     Irish, Scottish, English
Derived from the given name NEIL.
NEVILLE     English, Irish
From a Norman French place name meaning "new town".
NEVIN (1)     Irish, Scottish
Anglicized form of MAC NAOIMHÍN.
NEVIN (2)     Irish
Anglicized form of MAC CNÁIMHÍN or Ó CNÁIMHÍN.
NEWELL     English, Irish
Variant of NEVILLE.
NIVEN     Scottish, Irish
Variant of NEVIN (1).
NOLAN     Irish
Anglicized form of Irish Ó Nualláin meaning "descendant of NUALLÁN".
Ó BAOGHILL     Irish
Irish Gaelic form of BOYLE.
O'BEIRNE     Irish
Variant of O'BYRNE.
O'BERNE     Irish
Variant of O'BYRNE.
O'BOYLE     Irish
Variant of BOYLE.
Ó BRÁDAIGH     Irish
Irish Gaelic form of BRADY.
Ó BRADÁIN     Irish
Irish Gaelic form of BRADEN.
Ó BRAOIN     Irish
Irish Gaelic form of BREEN.
Ó BRAONÁIN     Irish
Irish Gaelic form of BRENNAN.
Ó BRIAIN     Irish
Irish Gaelic form of O'BRIEN.
O'BRIAN     Irish
Variant of O'BRIEN.
O'BRIEN     Irish
From the Irish Ó Briain meaning "descendant of BRIAN".
Ó BROIN     Irish
Irish Gaelic form of O'BYRNE.


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