Saturday, 1 February, 2020
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Does your Irish ancestor only appear on record once? Do other records seem to match, save for the first name? If you are flummoxed by how your ancestor could have so many aliases our unique index to those elusive old boys Irish names.

We have created an index of the most common names of native, old Irish  (pre-Norman) origin that were still popular first names for boys in 19th-century Ireland. Many of these names were later disguised by Latin and English "translations". This index is particularly useful for breaking down brick walls where an individual does not appear on record as expected.

In the early 20th century, confidence in the official use of one's authentic Irish (Gaelic) personal name grew.  So, in the Census of Ireland for example, a given name may have been recorded in English in 1901, but in Irish (or alternative spelling) in 1911. 

To facilitate your Irish ancestry research, we will continue to update this index with as many known spelling variations as possible. To contribute to this resource, click HERE

 

IrelandXO Insight - tricky Old Irish boys' names & aliases

Introduction

READ Insights: Old Irish First Names & aliases

Index Guide

Irish Gaelic [ga]

Latinised [la] 

Anglicised [encensus link (Variations: nicknames, aliases, alternative spelling)

Please note:

The original Irish/ Gaelic is followed by how it was recorded in Latin (italics).

  • Some letters in the English alphabet do not occur in Irish.   
  • Old Gaelic names were often batched together and disguised by one shared Anglicisation.
  • To flag this, some Irish / Gaelic names (from entirely different roots) have been combined in the same box.
  • How a Gaelic name was Latinized varied (and one individual could appear under any or all in the same parish register).
  • Use of the Latin form of a Gaelic name was not exclusive to church records e.g. Thaddius.

The purple indented text indexes all known variations in English (to include nicknames). 

  • Links to the 1901 Census have been included for the most popular spelling variant. 
  • [Origin] has been included as a hint to the county of origin, where the association is significant. 

The key takeaway is, of course, that a Gaelic name could have been recorded under a variety of "translations" (one individual could have multiple aliases) depending on the transcriber. 

To add to this index, please click HERE


How to Search the Index

To research a particular name (without having to scroll) use the FIND function on a desktop PC. The following keyboard shortcut will open a search/ find window:

  1. Hold down the CTRL key [Mac = command].

  2. Press F.

  3. Type in the name (or part of) and press RETURN.

  4. No results? Re-try using a partial spelling of the name. 

  5. To submit a query or a suggestion, click here

  • Some popular Irish Gaelic boys' names won't appear on this "Old Irish" list if they were introduced later by Normans e.g. Liam / Seán 

  • Our index to Irish Christian names of Norman origin is coming soon. For notifcation, be sure to sign-up / join here.


IrelandXO Index: OLD IRISH BOYS NAMES OF GAELIC ORIGIN  

A

Aibhistín, Oistín, ÁguistínAbhuistín, Ágaistín.

Augustinus, Augustus

Augustine, Austin, GusGustyGussie,  Gussy, Austey


Ailbe 

Albertus

AlbertElvis, AilbeBertieAlbin, Ailbhe, Alby, Albie, Bert, Burt.


Aodh          

Hugo , Hugonis, Hugones

HughHubertHerbertAidan, Aiden, AedhHughieHuey,    Aedán, Ádhán, Aden,  Hewdie, Huedy, Hiúdaí.


Aodhán   Edanus

AidanMoses MogueAedanAydenAodan,  Aydin, Aydan, Adyn,  Aidyn,  Aedyn, Aogán, Aodhagán, Aodhgan.

[see also: Maodhóg below]


Aonghas   

Antonius, Anthoni

AngusAonasAnthony  Aeneas, EneasEnnis, EnosGus,   Aonghus, AntonAengus, Ant, Angaidh.

[see also: Naos below]


Airt

Arturius, Artorius

ArtArthurArtúrArtieArtyAddie, Ady.


B


BeairtleBartlí / Partalán 

Bartholomaeus

BartholomewBartle, BartBartie, Bertie, BartleyBartlyBattBatBarty,  Barthow.,  Bartow.,  Partalón, Partholón


Breandán

Brendanus

Brendan , Brendon, Brenden


Brian

Bernardus / Barnabus / Boeticus

Bryan, BernardBarnaby, Barney, Brien


C


Cairbre

Carbery, Carbry、 Carberry, Carbary


Caoimhín

Kevin, Cian, Kevan, Kevyn


Cian 

Keane, Cain, Charles


Cathal 

Carolus Carlus

Charles, Cahal, Charlie, Charley, Sorley;  Chas. Cha's, Charlo, Carrol, Carl, Karl,

[see also: Cearbhall below]

Cearbhall

Carolus Carlus

Carrol, Charles, Carl, Karl, Cearbhaill, CharlesCharlie, Charley, Sorley; Chas. Cha's, Charlo


Ciarán

Kyrianus

Kieran, Ciar, Kieron, Kerne, Cairn, Kierrin, Kyran, Kieren, Cairan, Kernan


Cillian

Killian


Conal

Nicholas

Colin, Collin


Colmán, Colm

Columba

Coleman, Colman Callum


Conchúr

Cornelius, Constantinus

Conor, Connor, Conchubhar, Con, Constantine, Conn, Connie, Conny


Conn

Cornelius, Constantinus

Con, Constantine, Conn, Connie, Conny, Nialus


Conall

Cornelius, Constantine

Connell, Con, Conal, Coneily, Condy, Condaí, Conn, Connie,  Conny, Condie, Condey.


Cionnaith

Kenneth, Canice, Kenny, Coinneach


Cormac

Corneilius, Cormacus

CormackCharles, Cor, Corly, Corey, Corrie Neily, Neilus, Neil Cormick, Cormk.


Cúmhaí

Cooey, Quentin,  Hughey, Quintin, Quinton, Conmhaighe

[Origin: Derry]

D


Daire 

Darra, Darragh, Dara, Darach, Darragh


Déaglán 

Declani Declanus

Declan, Declán 


Diarmaid

Demetrius / Dermicius

Dermot, Darby, Jeremiah, Jerome, Jerry, Derry, Diarmuid


Donnacha, 

Donaldus, Duvenaldus

Denis, Donncha, Donny, Donnie, Dinnis, Dinny, Dinnie, Den, Don, Donie, Donal,  Donaghy  Donough, Donnchadh, Donnchad, Donnchadha, Dúnchad, 


Donnabhán   

Dyonisius, Dionisius 

Donovan Denis, Donncha, Donny, Donnie, Dinnis, Dinny, Dinnie, Den, Don, Donie, Donal


Dónall 

Danielus, Danieli,  Donaldus, Donatius

Donald, Daniel, Donal, Dan, Danny, Donny, Donnie, Don, Donie, Donat, Domhnall, David (handwriting error)


Dúghlas

Douglas, Doug, Douggie, Dougy,  Dubhghlas


E


Éamon, Éanna

Edmundus Eduardus

EdmondEnda, Edward, Edmund, Ed, Eddie, Eddy, Ned, Neddy, Edwin, Edm., Edw.  Éamonn


Éibhear, Íomhar

Heberus Eberous Iberus

Ever, Heber, Ivor, Iobhar, Ivarr

[Origin: Ulster]

Eoin  

Eugenus  Oenus  Owenus

Eugene, Owen, Eoghan


F


Fachtna 

Fachtanus

Festus, Festy, Festie, Factnan 


Feargal 

Furgallum  Fergallus  Fernaldus Ternaldus

Farrell, Fergal, Ferdinand,  Virgil, Fergie, Fergy / Ferdie, Fardy, Farrill, Ferrigal, Farrigal, Farage. Farrelle, Fregal


Feardorcha 

Fredericus Fridericus

Frederick, Ferdinand, Fred, Freddie, Freddy Ed, Eddie, Eddy / Rick, Ricky


Fearghas 

Fergusius

Fergus, Ferdinand
Fardy, Fergie, Fergy, Gus, Gusty, Gustie, Gussy


Féilim, Feidhlimidh  

Fidelmius  Fedlimius, Fidelmidius Fedlimidius

Phelim, Felix,  Phillip. Phelimy, Felimy Pheily, Phil, Philly, Phelen, Phelan / Pilib, Phalim, Phelam, Phelem, PheliamPhelem, Phelm, PhelumFelim,


Fionbarra, Barra

Finnbarrus

Finbar, Barry, Fionnbharr


Fion, Finín    

Finnius, Finnianus Fionanus, Fingenus  Finginus 

Finn, Fineen, Florence, Florrie, Florry, Flor, Fionan, Finnan, Finnian, Finghín, Finneen, Finnin


Fiontán   

Fintanus

Fintan  / Fenton, Ferdinand


Flann, Flannán, Fitheal    

Flannus, Flannanus

Flan, Florence, Flannan, Florence, Florrie, Florry, Flor, Fithcheallach


Fiach/ Feichín 

Fiacrus Fiachus  Fiachrius Festus /Fechinus

Festus, Feagh, Fiachra, Fiacre


G


Giolla Íosa 

Gilisius

Gill / Giles, Gillisa, Gillessa


Giolla na Naomh 

Sanctianus

Nehemiah 


Glaisne 

Glasnaeus

Glasny, Glas, Glass


I


Iognáid 

Ignatious  Agnetious

Ignatious


Iarlaith 

Irlathus

Jarlath


Irial 

Irilaus

Earl, Errol


L

Lachtna

Lucius 

Lucius, Luke


Lúcán

Lucanus

Lucan, Luke


Laoiseach, Laoighseach

Lucius

Lysagh, Lucius, Louis, Lewis


Lochlainn, Leachlain

Lochlunius

Loughlan, Loughlin,  Lackey, Lacky, Lachy, Lanty, Larry, Luke, Luis, Laurence, Lawrence, 


Lomán, 

Lomanus,

Loman


Lonán

Lonanus 

 Lonan


Lorcán

Lorcanus

Lorcan, Lawrence


Lughaidh  

Lugadius

Lorcan, Lewis, Louis, Aloysius, Louey


M

Maodhóg    

Maidocus

AidanMoses MogueAedanAydenAodan,  Aydin, Aydan, Adyn,  Aidyn,  Aedyn, Aogán, Aodhagán, Aodhgan.


Manus   

Magnus  

Magnus, Maonus, Manis, Mannas, Mannus, Manues, Manas, Mannasses,  Mannassas, Manasus, Manaus, Mances, Manacus, MandyManty,   Mundy,    Manes, Mangas, Manns, Maney, Manney 

[Origin: Donegal/ Derry]

Maolbheannachta  

Benedictus  

BenedictMacDaraMcDara

[Origin hint: Galway]

Mathghamhain 

Mathgamanius

Magown, Matthew, McGown, Matt, Matty, Mattie 


Maolmórdha   

Maelmorus

Myles, MilesMilles, MillsMoyles, Meles, Males, Maolir,  Meyler, Mylerus, Milerus,  Meyles, Mylie 


Maolmhuire 

Maelmarius 

Miles, Myles, Mortimer Meyler, Milo, Miles, Myles   Morty, Murthy


Maolmuiris  

Maelmarius 

Maurice, Morgan, Mortimer Meyler, Milo, Miles, Myles   Morty, Murthy


Maolsheachlainn, Maeleachlain   

Malachi, Malachius 

Loughlin, Malachy 

Melachlin, MalachyLacky, Malachey, Malichy, Malicky, Mallachy, Malochy, Mallaghan, Millican,  Michelan, Lackey, Lachey, Myles, Miles, Maoileachlainn, Melaghlin, Laughlin, Lanty, Milo 


Maolcholaim  

Malcolmus 

MalcolmMalcom, Malcohn, Malchom 

[Origin: Northern Ireland]

Muirgheas | Muiris 

Murgessius | Mauritius

Maurice, Morris, Morries, Mouris, Morros, Marice, MaruiceMaurace,    Maurce

[Origin: KerryCork & Limerick


Muircheartach  

Murchertachus 

Murtaugh, Mortimer  Murty


Murchadh   

Murchadus 

Murrough, Morgan, Murty


Muiríoch, Muireadhach

Murry, Murray, Mury, Mary, 


N


Naomhán

Sanctanus

Nevin, Nevan


Naos

Aonghus, Niece, Nicholas, Nace, Nence, Neece, Neese,

[Origin hint: Ulster]


Neasán, Nassán

Nesanus

Nason, Nassan


Niall, Néil, Niallán

Niallanus Nigellus

NeilNicholas, Niallus, Niellus, Nellus, Neal, Nei, Nigel


O


Odhrán 

Odranus Otteranus

Oran, Otheran, Orn


Oisín 

Ossenus

Ossian, Ossin


Oscar   

Osgerus

Osgur


R    

Raghnall  

Raganaldus/ Reginaldus Randlphus  

Reginald, Ronald, Randal, Raonall, Randall, Randolph, Ralph, Rághnall


Ronán 

Ronanus 

Ronan, Rownan


Ros 

Rossius

Ross, Rossa


Ruairí, RuaidhríRánall, 

Rodericus, Rudericus

Rory, Roderick, Roger, Roddy, Randal, Ronald, Raghnall, Roddy, Ragnaill, 


S 

Saerbhreathach  

Justinus

Justin, Justan, Justyn, Justen, Juston, Justinian

[Origin: Cork] 

Séadna 

Sedanus, Sedonius, Sidonius 

Sidney, Sydney, Sydny, Sidny


Seannán , Sionnán, 

Senanus 

Senan, Sennan, SynanSinonSinan

[Origin: Clare]

Somhairle 

Somerledus

Sorley 

[Origin: Antrim]

Suibhne  

Suibneus

Sivney, Simon, Silvester, Sylvester, Selvester, Silvy 


T  


Tadhg   

Thaddeus, Thadius, Timotheus

Timothy, Tim , ThadyThade, Theady, Thaddy, Tade, Teague, Teige, Taidhgin 


Toirdhealbhach  

Tordelvachus, Tobias,Terentius, Terricus

Turlough, Terence,  Charles, Terry, Traolach, Tarla,Tarlach, Toirealach, Turlough, Tirlough


Tighnearnach, Tighearnán

Tigernachus, Tigernanus

Tiernan, Tiernach,Tierney 


Tomhaltach 

Tomaltachus, Tumultachus 

TumeltyTimothy, Tobaltagh 


Tuathal 

Tuathalius,Tulius 

TullyToal   

[Origin: Donegal]

U

Uaithne

Antonius

Owney, Anthony, Uaitne, Hewney, Oney, Oynie, Onney, Antony


Ultán

Ultanus

Ultan, Ulty, Ultin, Ulten, Uleten, Ulteena


Over to you...

Got any of these names in your family tree? We'd love if you added them to our Ancestors roll-call here:


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What Next?

BACK TO Old Irish First Names & aliases

READ MORE  Irish Naming & Baptism Traditions |  Irish Surnames 101


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