Male

• Alpin - "attractive."
• Banning - "fair and small."
• Beagan - "small."
• Blair - "plain" or "field."
• Bogart - "bog" or "marshland."
• Beacan - (BE-kawn or BA-kawn) Old Irish=bec "little" + dim. -an. Saint Becan founded a monastery in Westmeath in the 6th C
• Bearach - (BA-rak) Old Irish=berach "pointed, sharp." Berach was the name of many Irish saints, including the patron siant of the O'Hanlys. Berach.
• Brady - "spirited." Bradaigh.
• Bran - (BRAWN) from Old Irish bran "raven." Bran was the name of a pagan Celtic god in both Irish and Welsh myth. Popular in the Middle Ages.
• Breasal - (BREE-sal) "land of the young" or "land of the blessed." Hi Breasil was another name for Tir-na-Nog.
• Breck - "freckled." Brec, Brexton.
• Brian - (BREE-an) Of uncertain derivation, poss. from Celtic brig "high, noble." In Irish myth, Brian was one of the three sons of the goddess Danu of the Tuatha De Danaan.
• Brogan - Saint Brogan was scribe to Saint Patrick during his meeting with the Fianna. Broccan.
• Caley - alternate Irish= Caleb.
• Caoilte - (KWEEL-te) In legend, Cailte was a member of Finn mac Cumaill's warrior band. In medieval tale Colloquy of the Ancients, Cailte returned from the otherworld to tell Saint Patrick stories of Finn and other heros of old pagan Ireland.
• Carrick - "rock." Caroq, Carraig.
• Casey - "brave."
• Cass - (KAHS) from Old Irish cas "curly." Popular name in early Ireland. Name of a legendary ancestor of the O'Briens, MacNamaras and O'Gradys.
• Chullain - (KUHL-in) a mythic name coming from Cu Chullain.
• Cian - (KEEN or KEE-an) Old Irish=cian "ancient, enduring." In legend, Cian was the son of Cian Cecht, god of healing of the Tuatha De Danaan. Also the father of the hero Lugh.
• Cianan (KEE-nahn, Kioan, Keon, Kean.
• Ciaran - (KEER-an) Old Irish=ciar "dark" + dim. suffix -an. 6th C. Saint Ciaran founded the monastery on Clonmacnoise. Kieran.
• Cillian - (KEEL-yan) "war or strife"; variant of Ceallach.
• Clancy - "red-headed fighter."
• Coyle - derived derived from gaelic meaning"leader in battle."
• Culann- in payment for killing his dog. Culin.
• Culley - might be "woods."
• Cluny - from a word meaning "meadow."
• Conor, Conlan, Conroy.
• Conn - (KOHN) Ancient Irish name, poss. derived from cu (con) "hound, wolf." Conn Cethchathach (Conn of the Hundred Battles) was a high king of Ireland in legend.
• Daley - might be "an assembly" or "a valley." Dawley, Dale
• Delaney - "descendant of the challenger."
• Digby - "a town with a ditch or dike."
• Dinsmore - might be means "fortified hill."
• Doherty - "harmful."
• Dolan - from a word meaning "dark-haired." Dolyn.
• Doran - "stranger" or "exile."
• Deoradhain
• Doyle - (Celt) "dark stranger."
• Doy
• Dugan - variants Dubhan, Duggan.
• Donnell - related to Donal and Domnal; Doneal, Donnelly.
• Dooley - "dark hero."
• Eanna - might be "birdlike."Ennae"
• Eoin - (OH-en or OH-een) Irish= Latin Johannes. Irish names Eoin and Sean both derive from Johannes. Sean, from the French Jehan, was introduced to Ireland by Norman French centuries after Johannes became an Irish name.
• Faolán - (FEH-lahn or FAY-lawn) Old Irish=faol "wolf" + dim. -an. Faolan was the name of fourteen saints, and ten warriors in Finn mac Cumhaill's band. Source of the surnames Phelan and Whelan. Anglicized Fallon, Faelan, Felan.
• Fenway
• Finnegan - "light skinned."
• Finnian - from finn "fair, pale-colored." Finnen.
• Fionn - (FYUHN) Old Irish=finn "bright, fair." Anglicized as Finn. Finn mac Cumhaill was a hero, poet and sometime outlaw who led a band of warriors known as the Fianna. Fiann, Finian.
• Fitzroy - "son of Roy."
• Flann - (FLAHN) Old Irish=flann "blood red." Flann has been the name of poets, scholars, abbots, saints, queens and kings. Flann Feorna was king of Kerry in the 8th C., and an ancestor of the O'Connors. Male or female name. Flainn, Floinn, Flannan, Flanagan, Flannagain, Flynn, Flannery.
• Garvey - from a word meaning "rough place."
• Gairbith.
• Gaynor - "son of the fair-skinned man." Gainor.
• Gilroy - "devoted to the king." Gildray.
• Glenville - "village in the glen."
• Gobban - (GOH-ban) from the name Goibniu, the ancient god of smithcraft who worked for the Tuatha De Danann. Goban.
• Hagan - "youthful" or "young."
• Haley - from a word meaning "ingenious."
• Innis - "from the island." Innes, Iniss.
• Kacey - alternate spelling of Casey.
• Kavan - "handsome." Kavenaugh.
• Keary - "dark or dark-haired."
• Keelan - from a word meaning "slender."
• Keeley - "handsome." Kealey, Kealy.
• Keenan - "little Keene." Keanan, Kienan.
• Kellen - "mighty warrior." Kaelan, Kael, Kailen, Kallen, Kaylen, Kaylan, Kealan, Kelan.
• Keller - from a word meaning "little companion."
• Kelvin - "a narrow river." Kelvyn.
• Kendrick - from a word meaning "son of Henry." Keondric.
• Kennard - "brave chieftain." Kenner.
• Kennedy - (KI-ne-dee) Old Irish=Cennetig: cenn "head" + etig "ugly." Kennedy became a surname while still used as a first name. Cennetig mac Lorcain was the father of high king Brian Boru. Cennetig.
• Kilian - (KIL-yan) Old Irish=Cillene, prob. from cell "church." Many saints bore this name including an abbott of Iona in Scotland. Cillene, Killian, Killy. Korey - variant of Corrigan