They include living languages like Welsh, Irish Gaelic, Scottish Gaelic and Breton as well as extinct or endangered languages (Cornish, Gaulish, Cumbrian, Manx, Pictish and Galatian).
| Name | Meaning |
|---|---|
| Aidan | fire |
| Alan, Alain, Alana, Lana | rock |
| Angus | choice |
| Archibald, Archie | genuine brave |
| Arthur, Arturo, Art | bear |
| Barry | spear |
| Blair | a plain |
| Brendan | prince |
| Brian, Bryon | noble |
| Bridgit | high goddess |
| Clancy | red warrior |
| Craig | rocks |
| Deirdre | woman |
| Dermot | without envy |
| Dervla | daughter poet |
| Desmond, Des | of South Munster |
| Donald, Don, Donnie, Donella | ruler of the world |
| Donovan | little brown dark one |
| Dougal, Doyle | dark stranger |
| Douglas, Doug | dark blue river |
| Duncan | dark warrior |
| Dylan | of the sea |
| Enid | soul, life |
| Erin | to Ireland, peace |
| Fergus | vigourous man |
| Fionn, Fiona | white, fair |
| Gareth, Gary | gentle |
| Gordon | hill |
| Guinevere, Jennifer, Jenny | fair and smooth |
| Imogen | maiden |
| Keith | wood |
| Kenneth, Ken | handsome |
| Kermit | free man |
| Kevin | comely child |
| Lloyd | gray |
| Malcolm | desciple of Coluim |
| Neil, Nigel | champion |
| Rhiannon | great queen |
| Rhonda | good spear |
| Rory | red king |
| Rowan | red one |
| Roy | red |
| Ryan | little king |
| Tara | hill |
| Trevor | big village |
| Tristan | riot |
