| O'Guiney | The last name O'Guiney is an Irish Gaelic surname which has its roots in the ancient Gaelic sept of Uí G potentagh, also known as Uí Dhubhain. This sept were part of the larger Uí Fiachrach group of... |
| O'Guinidhe | The last name O'Guinidhe (pronounced OH-GWEE-NEE-hee) is an Irish Gaelic patronymic surname, which descend from the male Gaelic patronymic prefix “O,” meaning “descendant of,” plus the personal name... |
| O'Guinn | The last name O'Guinn is an anglicised form of the Irish surname MacGuinn. The Gaelic form is Mac Fhionn, which was sometimes used as an alternative to O'Guinn. This surname is derived from the Irish... |
| O'Guinness | The Irish surname O'Guinness is an anglicized form of the Gaelic name Ó Gionnais, derived from the pronunciation of the particular branch name of the Gionnais people. This group was primarily located... |
| O'Guinye | The surname O'Guinye is an ancient Irish surname of Gaelic origin. It is an anglicised form of the Gaelic Ó Gaoithín, derived from the personal name Gaoithín, which is believed to be derived from a... |
| O'Gwen | The last name O'Gwen is derived from Irish origins and is found mostly in Ireland. The surname was most likely a reference to either the ancient Irish Gaelic name O'Geadhachain or Mac Geadachain,... |
| O'Gwin | The surname O'Gwin is an Anglicized version of the Irish surname O'Gobhain, which has its origins in the ancient Gaelic name Mac Gabhann or Mac Gobhain. The name is derived from the words 'mac,'... |
| O'Gwinn | The last name O'Gwinn is derived from the Irish Gaelic surname Ó Gíonn and is an Anglicization of the spelling. This name is thought to have originated with the ancient Giunn tribe, whose descendants... |
| O'Gwyn | The surname O’Gwyn is an Anglicized Irish name that derived from the Gaelic name Ua Gabhain, meaning “grandson of Gaffan.”
The meaning behind the first element in the surname, Gabhain, is thought... |
| O'Gwynn | The surname O'Gwynn is an Irish surname, originating from two Gaelic Irish surnames - Ó Suilleabháin and Ó Gamhna. It is most commonly found in County Cork.
The surname translates to mean... |
| O'H Uallachain | The surname O'H Uallachain originates from the early 10th century, coming from the Gaelic Irish language and is derived from the word "uallach". The literal translation of the name is "proud... |
| O'Hagan | The last name O'Hagan is an Irish surname, derived from the Gaelic patronym 'Ó hagáin', meaning 'descendant of hagán'. This was the name of an old Irish clan that originated in the area of County... |
| O'hAinmhire | The surname O'hAinmhire is an Irish surname derived from the Gaelic “O hAinmhíre” which translates to “Descendant of the Legacy”. This name was once reserved solely for families of the hereditary... |
| O'Haley | The last name O'Haley is a common Irish surname derived from the Gaelic surname Ó hEalaighthe, which translates to 'descendant of Ealaighthe'. Ealaighthe (or Ealadhach) was a personal name... |
| O'Halloran | The surname O'Halloran derives from the Irish phrase "Ua hAllagain." This phrase means "grandson of Allagain," a shortened form of "Olioll Ua Allagain," which translates to "grandson of Allagain who... |
| O'Haly | The surname O'Haly is an Anglicized form of the Irish name Ó hEalaighthe, which derives from the Gaelic word “ealadhach” meaning "scholarly". This surname is most commonly found in the province of... |
| O'Hamill | The surname O'Hamill is of Irish origin and is derived from the Gaelic Ó hÓmail. This name is usually derived from two elements; firstly from O’, meaning “grandson or descendant”, and secondly from... |
| O'Hanlon | The surname O'Hanlon is an Irish surname derived from the ancient Gaelic clan name Ó hAnluain. According to ancient Irish legends and historic records, the Ó hAnluain clan was one of the “Seven Septs... |
| O'Hanratty | The last name O’Hanratty is an Irish surname derived from the second name of the O’Hanratty family, Ó hAnrachtaigh. The Gaelic root of the surname, Anrachtaigh, is a variation of the name hAnradhach... |
| O'Hanraty | The last name O'Hanraty is of Irish origin and is derived from the Gaelic Ó hAnraite meaning “descendant of the monarch.” It is an Anglicized version of the Irish name O hAnradháin.
The Ó hAnraite... |
| O'Hara | The last name O’Hara is an Irish surname derived from the Gaelic “O’hEaghra.” The “O” prefix denotes “descendants of,” while the “hEaghra” is a name meaning “desire”. The O’Hara’s may have been... |
| O'hArain | The surname O’hArain is an Irish surname, derived from the Gaelic surname O hEaghra. It is an anglicized version of the original Irish surname that literally means ‘grandson of Eaghra’. The name is... |
| O'Haran | The last name O'Haran is an ancient Irish surname derived from the Irish surname Ó hEaghra. It is believed to have been first used by people of the O'Hara Clan who lived in the town of Oughterard in... |
| O'Haro | The last name O'Haro is an Irish surname derived from the Irish Gaelic word O'hIceadha, meaning “descendant of Iceadhach.” It is likely that the family was initially a clan from the Irish province of... |
| O'Haron | The name "O'Haron" is an Irish surname, deriving from the Old Gaelic Ó hEachthairn. This translates to mean "the descendant of Eachthairn". According to genealogical sources, this name was first... |
| O'Harra | The last name O’Harra is primarily of Irish origin, derived from the original Irish surname O’hAghair. The word "O'hAghair" is derived from 'O' meaning 'descendant of' and 'Aghair' meaning 'gentle',... |
| O'Harrah | The surname O'Harrah (aw-HARR-ah) is an ancient Irish name that originated in the province of Ulster. It is derived from the Ó hEarchada sept of the famous O'Neill and O'Donnell clans. The name is... |
| O'Harrow | The Irish surname O'Harrow is derived from the Gaelic Ó hEaghra, meaning "grandson of Eaghra". This personal name, in turn, was derived from the Gaelic word for “face”, each. Individuals with this... |
| O'Hart | The last name O'Hart is a traditional Irish surname originating in County Mayo in the northwest of Ireland. It is derived from the Gaelic phrase 'O hEoghartaigh', meaning 'descendant of Eoghartach'.... |
| O'Heaghra | The last name O'Heaghra derives from the original Irish surname of O'hEaghra, which is a variant of O'hEachthighearna, meaning "descendants of eachthighearna". In Gaelic, the word eachthighearna... |
| O'Healaithe. | The last name O'Healaithe derives from Gaelic and means “Descendant of Healat.” Healat is a personal name which originates from “Haoladh,” meaning “generous” or “noble.”
The family name O'Healaithe... |
| O'Healathaigh | The last name O’Healathaigh is an Irish surname, derived from the native Gaelic Ó hEilidhe (anglicised as O’Héilidhe). The literal meaning of the name is associated with health, derived from the... |
| O'Healey | The last name O'Healey is an Irish surname. It is originally derived from the Gaelic surname O héilidh, meaning descendant of Healey.
Healey is a diminutive form of the Irish name Ailill, meaning... |
| O'Healy | The last name O'Healy is an Irish name derived from the Gaelic surname "O'hEalaighthe". The given name was most likely derived from the Old Irish Áed meaning "fire" and Laighe, meaning "brightness."... |
| O'Heaney | The last name O’Heaney is an Irish surname, derived from the ancient Gaelic surname “O'hEighnigh”. The root of the name is the Irish ancestor Eigneachán, which is composed of two elements: “eigean”... |
| O'Hearain | The surname O'Hearain (also spelled O'Hernon, O'Haran, and other variations) is an anglicized form of the Irish and Gaelic name O'hEatharáin. It is derived from the words "O" meaning "grandson of"... |
| O'Hearn | The last name O'Hearn is an Irish surname originating from the southern province of Munster. The surname is derived from the old Gaelic surname Ó hEarna, which means "descendant of Earna".
In Irish,... |
| O'Hearne | The surname O'Hearne is the English spelling of the Gaelic Irish surname Ó hEaghra, meaning ‘descendant of Eaghrach’. Eaghrach was an ancient Celtic god associated with fire and sunlight who was... |
| O'Heenan | The last name O'Heenan is of Irish origin. It is derived from the old Gaelic name O'hEidhin, which is composed of two elements. The first element is o meaning "grandson" or "descendant," and the... |
| O'Heffernan | The last name O'Heffernan is a common Irish surname. It is derived from the Gaelic Ó hEimhirnin, which means "Horseman". This name is associated with noble families of the ui Eimhirnin, a clan... |
| O'Heffron | The last name O'Heffron is an Anglicized version of the Gaelic name Ó hIfearnáin, an old Irish family name meaning "descendant of Ifearnáin".
The original Irish name Ifearnáin may likely be derived... |
| O'hEignigh | The surname O'hEignigh is derived from the Gaelic Irish word "Ó hAonghusa," which is often anglicized as "O'Hagan" or "O'Hegney". It is believed to have originated in County Donegal in Ireland. This... |
| O'Heluighthe | The last name O’Heluighthe is a patronymic which originates from County Roscommon in Ireland. The name is derived from an original ancestor, said to have been a descendant of the ancient Irish Kings.... |
| O'Hely | The name O'Hely originates from an ancient Gaelic surname, Ó hEalaighthe, which belonged to a noble family in County Clare, Ireland. The literal translation of the surname is "descendant of... |
| O'Henry | The last name O'Henry is a variation of the Irish surname O’hEidhin or O'Heney, derived from the Gaelic name Ó hEidhin. It is believed to have originated in the County Clare region of Ireland. The... |
| O'Heron | The last name O'Heron is an Irish surname originating from the Gaelic O hEarchain, which derived from "each," meaning "horse." It is thought that the name was first borne by an ancestor of the clan... |
| O'Herron | The last name O'Herron is an Irish surname, derived from the Gaelic language. It is derived from the Gaelic words “O’h-Aireamhain”, which translate to “heir” or “lawful successor” in English. This... |
| O'Hickey | The last name O'Hickey is an anglicized version of the surname O hEochaidh, which is derived from the Gaelic element “eochaidh”, meaning “Horseman”. This was a common source of last names for early... |
| O'Higgins | The name O’Higgins is an anglicized version of the Irish name "O hUiginn”, which is derived from the Irish surname Uiginn, and it belongs to the O'hOigin Sept from Ireland. O'Higgins is commonly... |
| O'Higin | The last name O’Higin is an Irish name, derived from the Gaelic Ua hEigcéin or Ó hEigcein. Its root, Eigceann, means “sharp-minded” or “wise”. The O’ prefix usually indicates a descendent of someone... |
| O'Hologhan | The surname O'Hologhan is an Anglicized version of the Gaelic name Ó hUallacháin, meaning "descendant of Uallachán". The name Uallachán is derived from the Old Irish words uallach (proud or... |
| O'Holohan | The surname O'Holohan is an Irish name originating from the ancient Gaelic sept of Uí hAodha. It is found in the Barony of Kilmallock in County Limerick, and is derived from the personal name Aodh,... |
| O'Horan | The last name O'Horan is an anglicised version of the Gaelic surname Ó hAthchomhair, meaning “descendant of Athchomhar”. The name Athchomhar was taken from the Gaelic word for “help” and was commonly... |
| O'Hosey | The last name O'Hosey is an Irish surname derived from the Gaelic name "O'hOsighe". It is an ancient Irish name originally belonging to a prominent family in ancient Ireland. The family are believed... |
| O'Hurley | The last name O'Hurley is an Irish surname that originated in County Cork and County Limerick. It is derived from the name Ó hUrthuile, meaning descended from Urthuile, which was the old name for the... |
| O'Hussey | O’Hussey is an Irish surname that is derived from the Gaelic Ó hEasaidh, which itself is derived from the personal name Easa. It is an anglicized form of the given name Aodh, modernized as “Hugh”.... |
| O'Kane | The last name O'Kane is an Irish surname originating in the ancient Gaelic kingdom of Ulster. The form of the name was first recorded in the 12th century AD, derived from the old Irish personal name... |
| O'Kean | The surname O’Kean is generally believed to have originated from Irish and Scottish Gaelic roots, and is derived from the surname ‘O’Cathain’ – a form of the first name ‘Cahain’. The first name... |
| O'Keane | The surname O'Keane is an Irish surname which originated in the eleventh century. The surname O'Keane is derived from the name Keane which is an Anglicized form of the Gaelic term Mac Cathmhaoil. The... |
| O'Keefe | The last name O’Keefe is an Irish surname. It is an anglicized form of the Irish surname Ó Caomhánaigh which was derived from the Gaelic word caomh, meaning “beloved” or “gentle”. It is most commonly... |
| O'kelley | The last name O'Kelley is typically an Irish surname. It is derived from the Gaelic “O Ceallaigh”, meaning “descendent of Ceallach”. Ceallach, in turn, is an Irish byname that is made up of two... |
| O'Kelly | The family name O'Kelly is of Irish origin. It is thought to have originated in the region of Leinster, particularly the county of Meath. The name originates from the Gaelic O'Ceallaigh, and is... |
| O'Kennon | The last name O'Kennon is derived from the ancient Irish surname Ó Cianáin. This surname was used by a Gaelic aristocratic family in pre-Norman Ireland, who were associated with the ancient kingdom... |
| O'Keran | The last name O'Keran is derived from the Irish surname O' Ciardhubhain, which was shortened to O' Keeran and O' Carrone over the years. The root of the name is Ciar, meaning “black” or “dark” in... |
| O'Kirby | The last name O'Kirby is an Anglicised version of the Gaelic language surname O Ciardha, from the Irish word ciardha, meaning "Dark haired". The family originating from areas populated by the Irish... |
| O'Lachtna | The last name O’Lachtna is an ancient Gaelic family name of Irish origin, and it is believed to be derived from the old Norse and Gaelic phrase “Ualtan” meaning “noble” or “deserving of honor”. This... |
| O'Lannan | The last name O'Lannan is an Irish surname that can be translated to mean "descendant of Lannain". The word Lannan is derived from a first name Lann, an early Irish Gaelic masculine name meaning... |
| O'Laughna | The last name O'Laughna is most often associated with Irish history and culture. The name is derived from the Irish surname Ó Lachtnáin, meaning "descendant of Lachtnán", a personal name derived from... |
| O'Leary | The last name O'Leary (or O'Laoghaire) is an Irish surname that is derived from the Gaelic O' Laochra, which translates literally to "grandson or descendant of Laochra". Laochra is an old Gaelic... |
| O'Leathain | The surname O’Leathain, derived from the Gaelic language, is commonly found among those of Irish descent. It is associated with the surname O’Lathy and its variants. This last name is thought to... |
| O'Loghan | The last name O'Loghan is an Anglicized version of the Irish surname Ó Locháin. The origins of the name have been traced back to the 11th century, when a member of the O’Brien dynasty, a powerful... |
| O'Loghanan | The Irish surname O'Loghanan is derived from the ancient Gaelic word lochán which means “small lake” or “pool”. It is believed that the original O'Loghanan family were the descendants of an ancestor... |
| O'Loghnan | The Irish last name O'Loghnan originates from the ancient Irish Gaelic clan name Ó Lochnáin. This Gaelic surname is derived from the Old Irish Gaelic first name Lochán, which literally translates to... |
| O'Loingsigh | The last name O'Loingsigh is an Irish name. It originated from the Irish word “O’Luingeacha” which is a compound of the Gaelic words "O" (meaning grandson or descendant) and "Luingeacha" (meaning... |
| O'Long | The last name O'Long is of Irish origin. It is derived from the Irish Gaelic name, "Ó Loingsigh," which translates roughly to "descendant of Loingseach" or "descendant of Longus."
The root of the... |
| O'Loony | The surname O'Loony is an Irish surname derived from the Irish Gaelic surname "Ó Luinigh". O'Loony translates to "descendant of Luinigh" in Gaelic. The Gaelic prefix "Ó" means "grandson" or "male... |
| O'Lynn | The Irish surname O'Lynn (also spelled O'Linn, O'Lunn, O'Lean, O'Linn, and O'Lenn) is an anglicised form of the name Ó Luinge, which is derived from the Irish name Lugh, meaning 'bright one'.... |
| O'madadhain | The last name O'Madadhain is an ancient Irish name. It is derived from the Gaelic Ó Madadhaín, which is composed of two elements: Ó, which translates as "descendant/grandson", and Madadhaín, which is... |
| O'Madagan | The last name O'Madagan is an Irish name derived from the Gaelic surname Ó Madagáin. It is derived from the personal name Madagan, which is derived from madadh, meaning "dog". Thus, the literal... |
| O'madagane | The last name O'Madagane is of Irish origin and it is an anglicized version of the Gaelic last name "O Maedhagain". The name Maedhagain comes from the Irish Gaelic words “maedh” which means "prudent"... |
| O'madain | The surname O'Madain is an Irish surname of Gaelic origin from the Uí Mhaodhagáin clan indigenous to what is now County Roscommon in Ireland. The literal translation of the surname is "son of Madan,"... |
| O'Madden | The surname O'Madden is of Irish and Gaelic origin. It is derived from the name Ó Madáin, which can mean "descendant of Madáin" or "son of Madaí". Madaí is a personal name coming from the term... |
| O'madigan | The last name O'Madigan is an Irish surname that can be found in several regions of Ireland, most commonly in the northwestern counties of Mayo and Donegal. The name is derived from the Gaelic word... |
| O'madigane | The surname O’Madigane is believed to originate from Ireland, and many varying spellings of the name exist, such as O’Meadigane, O’Madagain, and O’Maddigan. The name is thought to come from the Irish... |
| O'Mahoney | The surname O'Mahoney is a patronymic surname, meaning that it is derived from the father's given name. In this case, the surname is derived from the Irish surname “Ó Mathghamhna” – a combination of... |
| O'Mahony | The last name O'Mahony is derived from the Irish Gaelic name Ó Mathghamhna, and is derived from the root word ‘mathghamhain’, meaning “bear”. This surname is common in the Irish province of Munster,... |
| O'Malley | The last name O'Malley is an Irish surname that has roots in the ancient Gaelic name Ó Maoileidigh. The literal translation of the Gaelic is “descendant of Maolleideach.” This was the name of a... |
| O'Mallie | The surname O'Mallie is an Irish name originating from the ancient Gaelic Septs of Uí Maolmhuaidh (O'Mallie) of Sabhal/Oirghiall, located in present day County Down, Ireland. The name is derived from... |
| O'Mallons | The Irish surname O'Mallons is derived from the Gaelic surname Ó Maoil Eoin, which means "descendant of Eoin the devotee (or follower) of St John". It is an old Irish clan name that was common in... |
| O'Manachain | The last name O'Manachain is an Irish name stemming from the Gaelic O'Meanachain. It has been anglicized to O'Manachain and is believed to have come from the Gaelic words "O" meaning "descendant" and... |
| O'Manlie | The last name O'Manlie is a very old and distinct Irish surname. It has a Gaelic origin, deriving from an anglicized form of the Gaelic word ‘Ó Manluadha’. This phrase, when translated directly,... |
| O'Maolconaire | The last name O'Maolconaire is an Irish clan name originating from the old Gaelic word “Maelcon” or “Maolcon.” Gaelic is a Celtic language that has been spoken in Ireland for centuries.
This name is... |
| O'Maolruanaidh | The last name O'Maolruanaidh is an Irish surname that means "Descendant of Maol Ruanaidh". Maol Ruanaidh was the name of a Celtic chieftain from the O'Maolruanaidh clan, whose descendants today carry... |
| O'Maonaile | The last name O'Maonaile is an Irish surname derived from the Irish word "maonaimh" which means "nobleman". It is an ancient Gaelic name originating from County Mayo, a region in the west of Ireland.... |
| O'Maonghaile | The O’Maonghaile surname originated from the Irish language, and is still highly popular in Ireland and its diaspora today. Its literal meaning is ‘descendant of Maonach’, with ‘Maonach’ being... |
| O'Meagher | The last name O'Meagher is an Irish surname, originating from the Gaelic word O Maighghair, which translates to "son of a descendant of Maighghair". This name is of noble origin and is associated... |
| O'Mealey | The last name O'Mealey is an anglicized version of the Irish surname Ó Míolthaigh, which is derived from the Irish word 'meala', meaning 'honeycomb'. The surname was primarily used for families with... |
| O'Mooney | The last name O'Mooney is an Irish surname. It's derived from the Gaelic "O'Muadhnaigh," which translates to "son of the follower of descent." The precise meaning of the term "follower of descent" is... |
| O'Moor | The last name O'Moor is an Irish surname, with ties to the Surname O'More which is derived from the Gaelic 'O' Mórrheir' or 'Mor' - meaning “great” or “large”. This name is thought to originate from... |
| O'Moore | The last name O'Moore is a patronymic surname, which is a name derived from the name of one's father, grandparent, or other ancestor. The name originates from the ancient Irish-Gaelic clan Ó Mórdha,... |