Celtic Kingdom Name Generator

Gaelic, Welsh, Pictish and Gaulish realm names

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Generate Celtic kingdom names drawn from real Irish, Welsh, Scottish, Pictish, Breton and Gaulish realms, plus original names built the same way: Ríocht and Teyrnas titles, Caer and Dún seats, Tír and Gwlad lands, and English forms like Kingdom of the Nine Glens.

About Celtic kingdom names

Real Celtic kingdoms were rarely named after a king or a capital. Irish over-kingdoms took the name of a people or a dynasty, so Dál Riata means the share of Riata's folk, Ulaid is simply the Ulstermen, and Uí Néill is the descendants of Niall. Welsh and Brittonic kingdoms like Gwynedd, Powys, Rheged and Gododdin were often named for a region or tribe, and the Picts divided Fortriu, Fib, Cait and Ce into a handful of provinces. Brittany used Bro, a country or district, as in Bro Waroch.

In Irish, Ríocht is a kingdom, Tír a land, Dún a fort and Ráth or Lios a ringfort seat, so Ríocht na nGleann is the Kingdom of the Glens and Tír na mBeann the Land of the Peaks. In Welsh, Teyrnas is a kingdom, Gwlad a country, Caer a fortress and Ynys an island, giving Teyrnas Eryri or Gwlad y Niwl, the Land of the Mist. Scottish Gaelic uses Rìoghachd, and Breton Rouantelezh.

For an English-language setting, translate rather than transliterate: Kingdom of the Nine Glens, Kingdom of the Red Branch or Kingdom of the Standing Stones reads as Celtic without a pronunciation guide. The list mixes attested kingdoms, cantrefs and tribal realms with original names that follow the same grammar.

How to choose Celtic kingdom names

  • Name the realm after its people or founding dynasty (Dál Riata, Uí Néill, Eóganachta) rather than its capital; that is how most real Celtic kingdoms worked.
  • Keep one language per region: Irish Ríocht, Tír and Dún names in one corner of the map, Welsh Teyrnas, Caer and Gwlad names in another, so each culture sounds distinct.
  • Use small units for texture: a Welsh cantref, an Irish túath or a Scottish mormaerdom makes a believable vassal under a larger kingdom.
  • For an over-king, borrow the Irish model of provinces under a High King at Tara: a Fifth of Connacht, a Fifth of Munster, and a High Kingdom above them.
  • If players will say the name aloud, prefer Caer Morwen or Kingdom of the Black Loch over names with lenited consonants like Ríocht Bhréifne.

Frequently asked questions

What were the real Celtic kingdoms?

Ireland had the five provinces of Ulaid, Connacht, Laigin, Mumu and Mide under a High King at Tara, with dynastic kingdoms like Dál Riata, Uí Néill and Osraige. Wales had Gwynedd, Powys, Dyfed, Deheubarth and Morgannwg; the Old North had Rheged, Gododdin, Elmet and Strathclyde; the Picts had Fortriu and Circinn; and Gaul had tribal kingdoms like the Arverni and Aedui.

What is the difference between Ríocht, Teyrnas and Rìoghachd?

They all mean kingdom: Ríocht is Irish, Teyrnas is Welsh, Rìoghachd is Scottish Gaelic and Rouantelezh is Breton. Using the right one tells readers which Celtic culture a realm belongs to.

Do I need to use the accents and special letters?

For authenticity, yes: the fada in Dún and Tír, the Welsh ŵ in Gŵyr and the ll and dd sounds are part of the spelling. For a fantasy setting you can drop them (Dun Morna, Tir Connla) and readers will still hear the Celtic flavor.

Can I use the historical names in my own world?

Historical and mythological names like Gwynedd, Dál Riata, Annwn or Tír na nÓg are public domain and free to use, though readers who know them will bring associations. The original names on the list are free to use anywhere without that baggage.

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All 500 Celtic kingdom names

This is the complete list the generator above draws its random batches from, sorted A to Z and grouped by first letter.

Plain text, one name per line.

A: 13 names

  • Aedui
  • Aillenor
  • Airgíalla
  • Alba
  • Albion
  • Alt Clut
  • Annwn
  • Ardmorra
  • Ardnacross
  • Armorica
  • Arverni
  • Atholl
  • Avalon

B: 28 names

  • Banba
  • Bituriges
  • Boii
  • Brannoch
  • Brega
  • Bréifne
  • Breizh
  • Brigantia
  • Bro Argoad
  • Bro Arvor
  • Bro Dol
  • Bro Dreger
  • Bro Erec'h
  • Bro Gerne
  • Bro Goueloù
  • Bro Gwened
  • Bro Gwenn
  • Bro Kemper
  • Bro Leon
  • Bro Naoned
  • Bro Penthièvre
  • Bro Poher
  • Bro Roazhon
  • Bro Rohan
  • Bro Sant-Brieg
  • Bro Waroch
  • Brycheiniog
  • Bryneich

C: 57 names

  • Caer Aderyn
  • Caer Arianrhod
  • Caer Bleddyn
  • Caer Brannoc
  • Caer Cadwaladr
  • Caer Carreg Ddu
  • Caer Derwen
  • Caer Dunan
  • Caer Ebrys
  • Caer Eirlys
  • Caer Elen
  • Caer Gwydion
  • Caer Gwyrdd
  • Caer Idris
  • Caer Lludd
  • Caer Llywelyn
  • Caer Mabon
  • Caer Maelor
  • Caer Meurig
  • Caer Morwen
  • Caer Rhiannon
  • Caer Seren
  • Caer Taliesin
  • Caer Tegid
  • Caer Urien
  • Caer Wyn
  • Caer Ysbryd
  • Caermorr

C, continued

  • Caiseal Mumhan
  • Cait
  • Calchfynydd
  • Caledonia
  • Cambria
  • Cantref Bychan
  • Cantref Coch
  • Cantref Gwaelod
  • Cantref Mawr
  • Cantref Pennardd
  • Cantref Selyf
  • Carnutes
  • Celtiberia
  • Cenél Conaill
  • Cenél nEógain
  • Ceredigion
  • Ciarraige
  • Circinn
  • Cnoc Áine
  • Cnoc an Óir
  • Cnoc Fírinne
  • Cnoc Meadha
  • Conmaicne
  • Connacht
  • Corcu Loígde
  • Cornouaille
  • Cruachan Aí
  • Cuailnge
  • Cymru

D: 51 names

  • Dál Fiatach
  • Dál gCais
  • Dál nAraidi
  • Dál Riata
  • Dalriadh
  • Deheubarth
  • Déisi Muman
  • Desmumu
  • Dinas Arianwen
  • Dinas Brân
  • Dinas Emrys
  • Dinas Powys
  • Dind Ríg
  • Dinefwr
  • Domnonée
  • Drumcarra
  • Dumnonia
  • Dún Ailinne
  • Dún Bhriain
  • Dún Ceallaigh
  • Dún Cearnach
  • Dún Chonchúir
  • Dún Cormaic
  • Dún Dealgan
  • Dún Diarmada

D, continued

  • Dún Éidinn
  • Dún Eochaidh
  • Dún Eochaill
  • Dún Fearghal
  • Dún Fiachrach
  • Dún Gallán
  • Dún Íomhair
  • Dún Laoghaire
  • Dún Lir
  • Dún Mór na Mara
  • Dún Mórna
  • Dún na nGall
  • Dún na Rí
  • Dún na Sí
  • Dún na Stoirme
  • Dún Ollamh
  • Dún Rathain
  • Dún Ruadh
  • Dún Sceilg
  • Dún Sobhairce
  • Dún Tulach
  • Dún Uabhair
  • Dunmorrow
  • Dunoding
  • Dyfed
  • Dyffryn Clwyd

E: 7 names

  • Ebrauc
  • Elmet
  • Emain Ablach
  • Emain Macha
  • Eóganachta
  • Ergyng
  • Ériu

F: 4 names

  • Fidach
  • Fódla
  • Fortriu
  • Fotla

G: 34 names

  • Galatia
  • Galloway
  • Glenmorran
  • Glywysing
  • Gododdin
  • Gwent
  • Gwlad Aeron
  • Gwlad Cynan
  • Gwlad Derwydd
  • Gwlad Elfed
  • Gwlad Fynydd
  • Gwlad Gwenllian
  • Gwlad Hafren
  • Gwlad Idris
  • Gwlad Llyr
  • Gwlad Maelgwn
  • Gwlad Nudd
  • Gwlad Owain
  • Gwlad Rhys
  • Gwlad Seisyll
  • Gwlad Teilo
  • Gwlad Urien
  • Gwlad y Bryniau
  • Gwlad y Cedyrn
  • Gwlad y Coed
  • Gwlad y Gaeaf
  • Gwlad y Glaw
  • Gwlad y Gwynt
  • Gwlad y Môr
  • Gwlad y Niwl
  • Gwlad y Sêr
  • Gwlad yr Afon
  • Gwlad yr Eira
  • Gwlad yr Haf

H: 3 names

  • Hen Ogledd
  • Hibernia
  • Hy-Brasil

I: 7 names

  • Ildathach
  • Inis Bó Finne
  • Inis Cealtra
  • Inis Ealga
  • Inis Fáil
  • Inis Mór
  • Inis Oírr

K: 91 names

  • Kernow
  • Kilbrannan
  • Kingdom of Ailech
  • Kingdom of Builth
  • Kingdom of Caer Gwenddoleu
  • Kingdom of Catraeth
  • Kingdom of Ce
  • Kingdom of Cumbria
  • Kingdom of Desmond
  • Kingdom of Dublin
  • Kingdom of Eidyn
  • Kingdom of Fib
  • Kingdom of Gwynedd
  • Kingdom of Leinster
  • Kingdom of Mann
  • Kingdom of Munster
  • Kingdom of Oriel
  • Kingdom of Ormond
  • Kingdom of Powys Fadog
  • Kingdom of the Allobroges
  • Kingdom of the Atrebates
  • Kingdom of the Bear Clan
  • Kingdom of the Belgae
  • Kingdom of the Black Loch
  • Kingdom of the Brigantes
  • Kingdom of the Britons
  • Kingdom of the Bull of Cooley
  • Kingdom of the Burning Cairn
  • Kingdom of the Caledonii
  • Kingdom of the Catuvellauni

K, continued

  • Kingdom of the Clyde
  • Kingdom of the Cold Lough
  • Kingdom of the Cornovii
  • Kingdom of the Damnonii
  • Kingdom of the Deceangli
  • Kingdom of the Demetae
  • Kingdom of the Dobunni
  • Kingdom of the Drowned Shore
  • Kingdom of the Durotriges
  • Kingdom of the Fianna
  • Kingdom of the Five Fifths
  • Kingdom of the Grey Hills
  • Kingdom of the Grey Stag
  • Kingdom of the Hawk's Rest
  • Kingdom of the Hazel Spring
  • Kingdom of the Hazel Wood
  • Kingdom of the Helvetii
  • Kingdom of the High Kings
  • Kingdom of the Horse Lords
  • Kingdom of the Iceni
  • Kingdom of the Iron Strand
  • Kingdom of the Isles
  • Kingdom of the Long Glen
  • Kingdom of the Lusitani
  • Kingdom of the Misty Moor
  • Kingdom of the Nervii
  • Kingdom of the Nine Glens
  • Kingdom of the Nine Hostages
  • Kingdom of the North
  • Kingdom of the Novantae

K, continued

  • Kingdom of the Oak Grove
  • Kingdom of the Ordovices
  • Kingdom of the Parisi
  • Kingdom of the Picts
  • Kingdom of the Raven
  • Kingdom of the Red Bog
  • Kingdom of the Red Branch
  • Kingdom of the Rowan
  • Kingdom of the Sacred Hill
  • Kingdom of the Salmon Run
  • Kingdom of the Salt Loch
  • Kingdom of the Scordisci
  • Kingdom of the Selgovae
  • Kingdom of the Seven Hills
  • Kingdom of the Severn
  • Kingdom of the Silures
  • Kingdom of the Silver Strand
  • Kingdom of the Stag
  • Kingdom of the Standing Stones
  • Kingdom of the Tectosages
  • Kingdom of the Thorn Hill
  • Kingdom of the Thousand Cairns
  • Kingdom of the Three Sisters
  • Kingdom of the Treveri
  • Kingdom of the Trinovantes
  • Kingdom of the Twelve Bens
  • Kingdom of the Western Isles
  • Kingdom of the White Strand
  • Kingdom of the Wolf Clan
  • Kingdom of Thomond
  • Kingdom of Tylis

L: 14 names

  • Laigin
  • Lennox
  • Lios Ceannúir
  • Lios Dubh
  • Lios Fiach
  • Lios Gréine
  • Lios Mór
  • Lios na gCon
  • Lios na Rí
  • Lios Tuathail
  • Lloegyr
  • Lochlann
  • Loígis
  • Lothian

M: 18 names

  • Maesyfed
  • Mag Breg
  • Mag Dubh
  • Mag Femen
  • Mag Mell
  • Mag Mór
  • Mag Murthemne
  • Mag nAí
  • Mag Slécht
  • Mag Tuired
  • Manaw Gododdin
  • Mannin
  • Mathrafal
  • Meirionnydd
  • Mide
  • Moray
  • Morgannwg
  • Mumu

N: 1 name

  • Noricum

O: 1 name

  • Osraige

P: 5 names

  • Pengwern
  • Penllyn
  • Pictland
  • Powys
  • Prydain

R: 87 names

  • Ráth Aodha
  • Ráth Bhreasail
  • Ráth Caola
  • Ráth Chonaill
  • Ráth Cruachan
  • Ráth Droma
  • Ráth Fraoich
  • Ráth Lugaid
  • Ráth Maeve
  • Ráth na Ríogh
  • Realm of Arawn
  • Realm of Belenus
  • Realm of Bran
  • Realm of Brigid
  • Realm of Ceridwen
  • Realm of Cernunnos
  • Realm of Danu
  • Realm of Epona
  • Realm of Gwyn ap Nudd
  • Realm of Lugh
  • Realm of Manannán
  • Realm of Nuada
  • Realm of Ogma
  • Realm of Rhiannon
  • Realm of Sucellos
  • Realm of Taranis
  • Realm of the Dagda
  • Realm of the Morrigan
  • Realm of the Sídhe

R, continued

  • Realm of the Tuatha
  • Rheged
  • Rhos
  • Rhos Fawr
  • Rhufoniog
  • Ríocht an Fhásaigh
  • Ríocht an Fhiolair
  • Ríocht an Iarthair
  • Ríocht an tSléibhe
  • Ríocht an Tuaiscirt
  • Ríocht Bhréifne
  • Ríocht Chnoc na Rí
  • Ríocht Chonnacht
  • Ríocht Dhoire
  • Ríocht Dhún Aonghasa
  • Ríocht Ghleann an Iolair
  • Ríocht Ghleann Dá Loch
  • Ríocht Laighean
  • Ríocht Mhaigh Eo
  • Ríocht Mumhan
  • Ríocht na Boinne
  • Ríocht na Carraige
  • Ríocht na Coille
  • Ríocht na Gaoithe
  • Ríocht na gCaorach
  • Ríocht na gCnoc
  • Ríocht na hAille
  • Ríocht na Locha
  • Ríocht na Mara

R, continued

  • Ríocht na Mí
  • Ríocht na nGleann
  • Ríocht na Réalta
  • Ríocht na Seabhac
  • Ríocht na Sionainne
  • Ríocht na Tairbhe
  • Ríocht Oirthear
  • Ríocht Osraí
  • Ríocht Thír Eoghain
  • Ríocht Uladh
  • Rìoghachd a' Chaolais
  • Rìoghachd an Fhraoich
  • Rìoghachd an Iar
  • Rìoghachd Bhàideanach
  • Rìoghachd Earra-Ghàidheal
  • Rìoghachd Ghallaibh
  • Rìoghachd Loch Abar
  • Rìoghachd na Beinne
  • Rìoghachd nan Eilean
  • Rìoghachd nan Garbh-Chrìochan
  • Rìoghachd nan Gleann
  • Rìoghachd Srath Chluaidh
  • Rouantelezh an Aod
  • Rouantelezh ar C'hoad
  • Rouantelezh ar Menez
  • Rouantelezh Arvor
  • Rouantelezh Breizh
  • Rouantelezh Gwened
  • Rouantelezh Kernev

S: 8 names

  • Seisyllwg
  • Sliabh Bán
  • Sliabh Bladhma
  • Sliabh Cuilinn
  • Sliabh Luachra
  • Sliabh Mis
  • Strathclyde
  • Strathearn

T: 55 names

  • Teamhair na Rí
  • Tech Duinn
  • Tegeingl
  • Tethba
  • Teyrnas Aberffraw
  • Teyrnas Afon Wen
  • Teyrnas Ardudwy
  • Teyrnas Arfon
  • Teyrnas Arwystli
  • Teyrnas Cedewain
  • Teyrnas Cyfeiliog
  • Teyrnas Dyffryn Aur
  • Teyrnas Edeirnion
  • Teyrnas Eifionydd
  • Teyrnas Elfael
  • Teyrnas Eryri
  • Teyrnas Gŵyr
  • Teyrnas Llŷn
  • Teyrnas Maelienydd
  • Teyrnas y Ddraig
  • Teyrnas y Mynydd Du
  • Teyrnas yr Eryr
  • Teyrnas Ystrad Tywi
  • The Fifth of Connacht
  • The Fifth of Leinster
  • The Fifth of Meath
  • The Fifth of Munster

T, continued

  • The Fifth of Ulster
  • The High Kingdom of the Western Fifth
  • The Over-Kingdom of Tara
  • The Over-Kingdom of the Glens
  • Tír an Airgid
  • Tír an Dúin
  • Tír an Óir
  • Tír Cairbre
  • Tír Chonaill
  • Tír Connla
  • Tír Ealga
  • Tír Eoghain
  • Tír fo Thuinn
  • Tír Gealach
  • Tír Lorcáin
  • Tír na bhFiann
  • Tír na gCapall
  • Tír na gCloch
  • Tír na Mara Móire
  • Tír na mBeann
  • Tír na nÓg
  • Tír na Rí
  • Tír na Seanchaí
  • Tír na Sídhe
  • Tír Oisín
  • Tír Tairngire
  • Tír Tuathail
  • Tuadmumu

U: 8 names

  • Uí Briúin
  • Uí Chennselaig
  • Uí Dúnlainge
  • Uí Failge
  • Uí Fiachrach
  • Uí Maine
  • Uí Néill
  • Ulaid

V: 1 name

  • Veneti

Y: 7 names

  • Ynys Afallon
  • Ynys Enlli
  • Ynys Môn
  • Ynys Wydrin
  • Ynys yr Eryr
  • Ystrad Alun
  • Ystrad Yw