| O'Cuana | The last name O'Cuana is an Irish surname that can be found throughout the world. The name is derived from Uí Dhomnhaill, a sept of the Uí Néill (O'Neill) dynasty from Ireland. The origin of the name... |
| O'Cuanaich | The last name O’Cuanaich is an Irish surname originating from the Irish Gaelic Ó Cuanaich, which roughly translates to “descendant of Cuanaich”. This name likely comes from people who held the title... |
| O'Cuin | The last name O'Cuin (or O'Cuinn) is an Anglicized version of the Irish name Ó Cuinn, which means “descendant of Conn” and derives from the personal name Conn. Conn is a very old first name, with the... |
| O'Cuinn | The surname O'Cuinn is an Irish surname derived from the Gaelic language. The Irish version of the name is Ó Cuanaigh. Historically, the Gaelic naming system identified people by their relationships... |
| O'Cullen | The surname O’Cullen is an Anglicised form of the Gaelic name Ó Cuileannáin. This name is derived from the word Cuileannáin, which means “holly”, and as such is often associated with this plant. In... |
| O'Cullin | The last name O'Cullin is an Irish surname derived from the Gaelic name Ó Curnáin, which itself is derived from the name Curnan. This name in turn was derived from the Old Irish name Cù Chuilinn. The... |
| O'Curren | The last name O'Curren is derived from the Irish Gaelic name Ó Corraoin. It is an ancient surname which translates to mean "son of Corraoin". Corraoin itself is derived from the Old Irish word... |
| O'Dair | The last name O'Dair has Irish and Scottish origins. The Irish version of the name is Ó Dubhshláine, with “Dubhshláine” meaning “dark challenger” or “dark (warrior) of the ring”. In Scotland, the... |
| O'Daniel | The last name O’Daniel can be seen in many cultures, historically going as far back as the medieval period in Ireland and Scotland. The Irish spelling of the name is 'O'Diomhnaill', which translates... |
| O'Darrah | The Irish surname O'Darrah is an anglicized version of the Gaelic name "Ó Dearghaile," which is composed of the elements "dearg," meaning "red," and "gaile," meaning "noise or yelling." This name is... |
| O'Davin | The last name O'Davin is of Irish origins and is an anglicized form of the Gaelic name "O'Daimhín" which comes from the personal first name of "Daimhín". It is a form of the Irish-Gaelic name... |
| O'Dell | The last name O'Dell is an Irish Anglicized surname derived from the Gaelic Ó Dubhghaill. It is alternately spelled as O'Dwyer, O'Daire, O'Doherty, or O'Distle.
The root word is "dubh", which means... |
| O'Dennehy | The Irish surname O’Dennehy is derived from the Gaelic name O'Dionnaicht, which translates to ‘descended from Dionacht,’ or ‘grandson of Dionacht.’ Dionacht is an ancient and popular Irish personal... |
| O'Denning | The last name O'Denning is an Irish surnaame, derived from the Gaelic Ó Díonnain sept who were located in County Cork and derived from an ancient chieftain. They are believed to be a branch of the... |
| O'Devine | The surname O'Devine is an Anglicized form of the Irish name Ó Duibín. The Irish name is an anglicization of the Gaelic Ó Dubhain, meaning "descendant of Dubhan".
The personal name Dubhan was... |
| O'Dhonnabhain | The surname O’Dhonnabhain is an anglicised version of the Gaelic name Ó Donnabháin, which is derived from the Irish Donnabán. This ancient name is composed of the personal name Donn (meaning... |
| O'Dinan | The surname O'Dinan is an Irish family name, although it may also be found in other parts of the world. The name likely comes from the Gaelic word 'Ó Duinnín', meaning 'descendent of Duinnín'.... |
| O'Dinnan | The origins of the surname O’Dinnan are largely unknown. It is thought to be a name originating from the south of Ireland, though exacts records are scarce. The surname O’Dinnan is predominantly... |
| O'Dinning | The Irish surname O’Dinning is derived from the Gaelic word O Duinnen, which means “descendant of Dunne”. Dunne is an old Gaelic personal name which is believed to derive from the element “donn”,... |
| O'Dochartaigh | The last name O'Dochartaigh is an old Irish name that originates from the clan-name Ó Dochartaigh, which in turn comes from the Gaelic word dochartach, meaning “obstinate.” This was likely a... |
| O'Doelan | The last name O'Doelan is an ancient Irish surname, derived from the anglicized version of the Gaelic Ó Dubhshláine, which translates to "Descendant of Dubhshláine". Dubhsláine is a personal name... |
| O'Dogherty | The surname O'Dogherty is an ancient Irish name, stemming from the ancient Irish Gaelic Ó Dochartaigh. It has its origins in the historic Irish kingdom of Corcu Duibne, located in what is now County... |
| O'Doherty | The O'Doherty surname originates from ancient Irish Gaelic origins. It is derived from the old Gaelic name 'O'Dochartaigh', which translates to descendant of Dochartach. This name has a variety of... |
| O'Donell | The last name O'Donell is a classic Irish surname. It is derived from the Gaelic name 'Ó Domhnail'. It is a patronymic name originating from the name Domhnall, which means ‘world ruler’ or... |
| O'Donnell | The last name O'Donnell is an Anglicized version of the Irish Ó Domhnaill, which is derived from the Irish personal name Domhnall. Its literal translation is “world mighty” or “world ruler”.
The... |
| O'Donnellean | The last name O'Donnellean is of Irish origin and is derived from the Irish name Ó Domhnaill, which translates to “descendant of Domhnall”. Domhnall is an ancient Irish name composed of two elements.... |
| O'Donoghue | The last name ‘O’Donoghue’ is derived from the ancient Irish surname ‘Ó Donnchadha’, which originated in the Uí Fiachrach tribe. This tribe is located in south-east Mayo, around Ballina, Killala and... |
| O'Donovan | The last name O'Donovan is an Irish surname of Gaelic origin that originated in County Cork, Ireland. The prefix “O” signifies “grandson” or “descendant”, while “Donovan” has its roots in the Gaelic... |
| O'Doonan | The surname O'Doonan has its origins in Ireland, and is derived from the Gaelic surname 'Ó Duinnín'. Generally, surnames are passed down from father to son and reflect the name and status of the... |
| O'Dowd | The last name O'Dowd is an anglicized version of the Gaelic/Irish name Ó Dubhda, a name derived from the Irish word "dubhda" which means dark haired one. The O'Dowd family is a sept of the Ui... |
| O'Doyle | The last name O'Doyle is an Irish surname, based on the Gaelic word ‘Ó Dubhghaill’, which literally translates as ‘descendant of Dubhghall’. Dubhghall is a masculine first name derived from the Norse... |
| O'Driscoll | The last name O'Driscoll is an Irish name, derived from the Gaelic Ó hEidirsceóil, which means "descendant of Eidirsceóil". Eidirsceóil was an ancient Irish warrior, whose descendants adopted the... |
| O'Dubhda | The last name O'Dubhda is a traditional surname of Irish origin. It was most commonly found in the counties of Galway and Mayo in the west of Ireland. The origins of the ‘O' prefix indicate that the... |
| O'Dubhdara | O'Dubhdara is an Irish surname, meaning "descendant of Dubhdara". The name is thought to have originated in County Westmeath, Ireland in the 12th century.
Dubhdara is derived from the old Gaelic... |
| O'Duffy | The surname O'Duffy is an Irish surname that originated with the native Gaelic O Dubhthaigh family in County Mayo, Ireland. It is an Anglicized version of the Gaelic name "O Dubhthaigh," which can be... |
| O'Duggan | The last name O'Duggan (or O’Dochartaigh) is a Gaelic surname of Irish origin. The root of the name is 'Duchtach', which derives from an old Irish personal name meaning 'hostage', referring to a... |
| O'Dwyer | The last name O'Dwyer is an Irish surname derived from the Gaelic term "ó Dubhuir". This name is a variant of the old Irish "Dubhuir" and can also be rendered as O'Douer, O'Duir, O'Duer, and similar... |
| O'Egan | The last name O’Egan originates from Gaelic Ireland, and is a variation of the name “O’Hagan” or “O’Hegarty.” It is derived from the Gaelic word “Ionghagan,” which means fiery-one.
The O’Egans were... |
| O'Faddle | The last name O'Faddle is of Irish descent and is derived from the Gaelic language. The name is thought to have originated during the invasion of Ireland by the Normans in the 12th century. The name... |
| O'Faoláin | The Irish surname O'Faoláin (also spelt O'Fealan, O'Fallon, or Fallon) is derived from the Gaelic name Ó Fallamhain, meaning "descendant of Fallamhan".
Fallamhan was the name of a 10th century... |
| O'Farell | The Irish surname O’Farrell originates from the ancient Gaelic ó Fearghail clan, which is believed to have been founded by Fearghal, who was descended from the legendary King Niall of the Nine... |
| O'Farley | The last name O'Farley is an Irish surname meaning "son of Farley." Farley itself is an Anglo-Norman name derived from two Old French elements, fer, meaning "journey," and lei, meaning "meadow." Put... |
| O'Farral | The origin of the last name O'Farral comes from the old Gaelic name Ó Fearghail, which is made up of two elements: Fearghal which means "valorous," and Ó which is a Gaelic prefix meaning "descendant... |
| O'Farrel | The last name O'Farrel is an Irish surname that originates from the Gaelic names O'Fearghail or O'Firghil. It is derived from the ancient Irish word for man, "fearghal", which translates to... |
| O'Farrell | The last name O'Farrell is an Irish surname, meaning "son of Farrell" or "descendent of Farrell." The given name Farrell (or Fearghal) is Gaelic in origin and derived from the Old Irish “fear”... |
| O'Farrelly | The last name O’Farrelly is an Anglicized version of the Irish surname Ó Fionnghalaigh, which originated as an Irish Gaelic clan name meaning “descendant of Fionnghalach”.
The name Fionnghalach is... |
| O'Farrol | The surname O'Farrol originated from Irish and Scottish descent. It is an Anglicized version of the Gaelic surname "O'Fíodhbhu'" which actually translates highly literally to "Descendant of the... |
| O'Farys | The last name O'Farys is an Irish surname, derived from the Gaelic phrase Ó Fáraigh (or Ó Faircheallaigh). This phrase is composed of two distinct Gaelic elements, with Ó meaning “descendant of” and... |
| O'Fearghail | The surname O'Fearghail is an Irish derivatives meaning ‘man of valour’. It is derived from the Irish name Fearghal which is composed of two Gaelic words: 'fear' meaning 'man' and 'gal' meaning... |
| O'Feehan | The Irish surname O'Feehan is derived from the Gaelic name Ó Fíodhabhaigh, which anglicized to Feehan or Fehan. The names likely derive from the Irish word ‘fiodh’, meaning both ‘forest’ and ‘peace’.... |
| O'Ferel | The last name O’Ferel is of Irish origin and is derived from the Gaelic language. It is a form of the surname Mac an Fhirile, which translates to mean ‘son of the Ferile’.
Ferile is an old Irish... |
| O'Feril | The surname O'Feril is an Irish surname originally associated with County Clare in Ireland. It is derived from the native Irish surname O'Fearghail, which translates to ‘son of Fearghal’. Variations... |
| O'Ferrally | The surname O'Ferrally originates from the ancient kingdom of Connacht, which is now located in the West of Ireland. It is derived from the Irish phrase 'of Fír Reghaile', meaning 'descendant of... |
| O'Ferrell | The last name O’Ferrell is an Irish surname of Gaelic origin. Historically, many Irish last names were derived from toponyms referencing the native people and countryside. O’Ferrell follows this... |
| O'Ferrill | The last name O’Ferrill is an ancient Irish name from the Gaelic surname, 'O'Fearghail', which means ‘descendant of Fearghal’. Fearghal was a personal name that originated from the Gaelic 'fearchar',... |
| O'Finan | The surname O'Finan originated in County Roscommon, Ireland. It is derived from the personal name 'Finan'. The most likely meaning of this name is 'fair', from the Gaelic 'fionn' or 'white'.
The... |
| O'Flahiffe | The last name O'Flahiffe has Irish roots and is derived from the Gaelic name Ó Flaithbheartaigh, meaning 'descendant of Flahiffe'. This surname is rooted in County Mayo in Ireland. The Gaelic prefix... |
| O'Flanagan | The last name O’Flanagan is an Irish surname with origins in the country’s Gaelic culture. It is derived from the old Gaelic personal name “Flannagan”, which was originally derived from the Gaelic... |
| O'Flanigan | The O'Flanigan surname is an Irish surname with Gaelic origins. The surname is derived from the Irish Gaelic ó Flannagáin, which is derived from the personal name Flannagán. The name is composed of... |
| O'Flannagain | The O'Flannagain surname is of Irish and Scottish origin. Derived from the Gaelic phrase, "O Flannabhraigh", the meaning translates to “brave” or “hero”. This surname likely originated as an... |
| O'Flannagan | The surname O'Flannagan is an Irish name that has a long and complex history. It is a patronymic surname, which means that it is derived from a Gaelic personal name, most likely Flannagan, and the... |
| O'Flanniagan | The last name O'Flanniagan is an Irish surname mostly found in the province of Ulster. It is an anglicized form of the Old Gaelic name "O'Fhlannagain" which translates to "descendant of Flannagain"... |
| O'Floinn | The origin of the Irish surname O'Floinn is derived from the root name 'Flann', which has its origins in the Old Irish name 'Flannabhra'. The literal translation of O'Floinn is 'the descendant of the... |
| O'Flynn | The last name O'Flynn is derived from the Irish surname Ó Floinn, which is the Anglicized form of the Gaelic personal name 'Flann'. The name is derived from an old Gaelic word meaning 'red' or... |
| O'Frawley | The last name O'Frawley is typically an Irish surname. It is derived from the Gaelic name ó Fearmhaile which translates as 'descendant of Fearmhaile'. Fearmhaile is thought to come from either... |
| O'Gar | The last name O'Gar is a surname of Irish origin. Historically, the surname was used to identify people from the region of Uí Garrchon, a former kingdom in what is now County Sligo in Ireland.... |
| O'Gara | The last name O'Gara is an Irish surname originating in County Leitrim. The surname is derived from Ó Gadhra which translates to "descendant of Gadhra." The name Gadhra comes from the ancient Gaelic... |
| O'Garah | The surname O'Garah is an Irish surname of Gaelic origin. It is derived from the native Gaelic Ó Gadhra Septs, which means "descendant of Gadhra". The O'Garah septs were located in the province of... |
| O'Garey | The last name O'Garey is an Irish surname derived from the ancient Gaelic name O'Gairdheabha, which means "descendant of Gairdheabha". Gairdheabha was an ancient Irish chieftain in the eleventh... |
| O'Garie | The last name O'Garie is an Irish surname. According to some sources, the name is derived from two separate Gaelic names, O Gadhra (meaning "descendant of Gadhra") and O Gadhraigh (meaning... |
| O'Garr | The surname O'Garr is an Irish surname of Gaelic origin. It is an anglicized form of the Gaelic name Ó Garra, which translates as "descendant of Garra". The Gaelic personal name Garra was derived... |
| O'Garra | The Irish surname O'Garra is an anglicized form of the Gaelic O'Gathaidhe. It is a patronymic surname meaning "descendant of Gathaidhe", with Gathaidhe being the given name of the original bearer of... |
| O'Garragh | The Irish surname O’Garragh is derived from the Gaelic “O’Gairbhith” - meaning “descendant of Garradh”. The name Garradh is from the Irish word “gairbh”, which translates to mean rough or fierce. ... |
| O'Garrah | The Irish surname O'Garrah likely originates from the Gaelic phrase "O'Gara," which is derived from the old Irish given name "Garrai." "Garrai" was derived from the Old Irish word "gar," which means... |
| O'Garrow | The last name O'Garrow is an Irish surname which was derived from the Gaelic given name Ó Garbháin, which is composed of two elements - the Gaelic prefix 'Ó' (meaning 'son of) and the individual name... |
| O'Garry | The surname ‘O'Garry’ is derived from the ancient Irish language and is a derivative of the Gaelic ‘O'Garbháigh’. The ‘O’ prefix of the surname indicates that the family is borne from a patriarch... |
| O'Gary | The last name O'Gary is of Irish origin. This surname is derived from the Gaelic surname "O'Gairmheach," meaning "son of Gairmheach." The root word "gairmheach" translates literally to "speaker,"... |
| O'Gear | The last name O'Gear is an anglicized form of the Irish surname Ó Garaidh, which is derived from the Irish Gaelic word garadh, meaning ‘guard’ or ‘defender’. This last name originated in the Irish... |
| O'Geary | The last name O'Geary is an anglicized version of the Irish Gaelic name Ó Géibheannaidh, which roughly translates to "descendant of the small-forked one." This name is thought to have originally... |
| O'Gin | The surname O'Gin is an Irish name that has been around for centuries. It is derived from the Gaelic expression "Ó Gaedheal", which translates to "grandson/descendant of Gaedheal". Gaedheal was a... |
| O'Ginn | The last name O’Ginn is an Irish name with roots in the old Irish language and Gaelic tradition. The name is derived from the Gaelic prefix "O’" which usually indicates a person of noble origin. The... |
| O'Gneeve | The surname O'Gneeve is an Irish surname, originally derived from the medieval Gaelic personal name O Gnímh. This name is composed of the prefix O (which means "grandson"), the noun gnímh (meaning... |
| O'Gnive | The origin and meaning of the last name O'Gnive is not known with any certainty. One possible origin is that it is an Anglicised form of the Gaelic surname Ó Gníomhach, which means “descendent of the... |
| O'Gora | The last name O'Gora is derived from the Gaelic Ó Górda, meaning "descendant of Gofraidh”, with Gofraidh being a personal name of uncertain origin. The name is an anglicized version of the Irish... |
| O'Gorman | The surname O'Gorman is an Irish name derived from the Irish Gaelic ‘O Gormain,’ meaning 'son of Gorman.'
The name Gorman is a Munster surname that means ‘son of the blue-eyed one.’ It comes from... |
| O'Gormley | The last name O'Gormley is an Irish surname derived from the Gaelic “Ó Gormaile.” It is one of the many Irish surnames that originate with the native Gaelic population that first arrived in Ireland... |
| O'Gormooly | The last name O’Gormooly originates from Ireland and is derived from the old Gaelic phrase “Ó Gadhmaill”. This phrase roughly translates to the “son of the sickly one”. It is a patronymic surname,... |
| O'Gorra | The last name O'Gorra is of Irish origin and it is an anglicized form of the Irish surname Ó Gadhra. It is derived from the old Gaelic name "Ó Gadhra" which was the family name of a branch of the... |
| O'Gowan | The last name O'Gowan is derived from a combination of two Gaelic words: "O" meaning "descended from" and "Gobhan," which can be translated to mean "a smith." This indicates that the people who first... |
| O'Gowen | The last name O’Gowen is an anglicized version of the Irish surname O’Gobhain, which is derived from the ancient Irish word 'gobha' meaning 'blacksmith'. The O’Gowen surname is thought to have first... |
| O'Gowin | The last name O'Gowin is an Irish name of Gaelic origin, meaning “son of Owen." This surname originated in the southern portion of County Clare in Ireland.
The Owens were a family of Gaelic warriors... |
| O'Grady | The surname O'Grady is of Irish origin, and is the anglicised form of the Gaelic ‘O Grádaigh’, meaning ‘Descendant of Grádaigh’. Grádaigh is an ancient personal name composed of two elements –... |
| O'Grocan | The last name O'Grocan is an Irish surname derived from a Gaelic word. The Gaelic word ‘O’Groacháin’ means ‘foreigner’ and it is likely that those with this name were of Viking descent.
Originating... |
| O'Grogan | The surname "O'Grogan" is derived from the Irish language and is associated with the Gaelic clans of Ireland. It is a patronymic surname, meaning "descendant of Grogan," referring to a certain Grogan... |
| O'Gruagaine | The last name O'Gruagaine is an Irish surname, originating from the Gaelic O Gruagáin. The root name Gruagán is derived from gruag, which is Gaelic for “lock of hair”. This name is believed to be an... |
| O'Gruagan | The last name O'Gruagan is an Irish surname which comes from the Gaelic ‘O’Gruagáin,’ which translates to mean ‘grateful one’ or ‘son of grateful one’. The O’Gruagan surname is also related to The... |
| O'Grugain | The last name O'Grugain is an Irish surname originating in County Kerry in the Southwestern region of Ireland. The history of this name dates to the 16th century, when a clan of O'Grugains were... |
| O'Guaire | The last name O'Guaire is an Irish surname found primarily in modern day County Mayo and County Galway. The name is an anglicization of the Irish name Ó hAodha, which translates to 'descendant of... |
| O'Guin | The last name O'Guin is of Irish and Scottish origin and is derived from the Irish surname Ó Goin which is a patronymic form of the Gaelic personal name Goin. Goin is a variant of Adam, which in... |
| O'Guinan | The surname O'Guinan is an Irish name originating from the Gaelic O’Gaibhneáin, which translate to English as “descendant of Gaibhneán.” Gaibhneán is thought to have been the name of a Gaelic... |