Abbeyfeale in Limerick; Mainistir-na-Feile, the monastery or abbey of the river Feale.
Abbeygormican in Galway; the abbey of the O’Cormacans.
Abbeylara or Lara in Longford; Leath-rath, F.M. [Lah-rah], half rath or fort.
Abbeyleix; the abbey of the old principality of Leix, so called from a monastery founded there in 1188 by Conor O’Moore. In the reign of Felimy the Law­giver (A.D. 111 to 119), this territory was given by the king of Leinster to Lughaidh Laeighseach [Lewy Leeshagh], Conall Carnach’s grandson, for helping to expel the Munstermen who had seized on Ossory. Lewy’s descendants, the O’Moores, took from him the tribe name, Laeighis [Leesh], and their territory was called by the same name, now modernized to Leix.
Abbeyshrule in Longford; from a monastery founded there by one of the O’Farrells. It was anciently called Sruthair [Sruher]. F.M., i.e. the stream, of which Shrule is a corruption.
Abbeystrowry in Cork; the same name as the last. The struthair or stream from which it was called, gave name also to Bealnashrura (the beal or ford-mouth of the stream) a village situated at an ancient ford.
Achonry in Sligo, Achadh-Chonaire [Aha-Conary], F.M., Conary’s field.
Adare in Limerick; Ath-dara [Ah-dara], F.M., the ford of the oak tree. A large oak must have anciently overshadowed the old ford on the Maigue.
Addergoole, Addragool, Adrigole, Adrigoole; Eadar­dha-ghabal [Adragoul], i.e. (a place)
between two (river) forks.
Aderrig; Ath-dearg, red ford. See Aghaderg.
Affane on the Blackwater below Cappoquin; Ath­mheadhon, [Ah-vane], F.M., middle ford.
Agha in several counties; Achadh [Aha], a field.
Aghaboe in Queen’s County, where St. Canice of Kilkenny had his principal church. Adamnan in his Life of St. Columkille, written in the seventh cen­tury, has the following passage, which settles the meaning:-“St. Canice being in the monastery which is called in Latin Campulus bovis (i.e. the field of the cow), but in Irish Ached-bou.”
Aghaboy; Achadh-buidhe [Aha-boy], yellow field.
Aghacross near Kildorrery in Cork; the ford of the cross; probably from a cross erected in connexion with St. Molaga’s adjacent establishment, to mark a ford on the Funcheon. See Templemolaga.
Aghada near Cork; Ath-fhada [Ahada], long ford.
Aghaderg; Ath-dearg, red ford. See Aderrig.
Aghadoe near Killarney; Achadh-dá-eó [Aha-daw-o], F.M., the field of the two yew trees.
Aghadowey in Derry; Achadh-Dubhthaigh [Ahaduffy], O’C. Cal., Duffy’s field.
Aghadown and Aghadoon; the field of the dun or fort.
Aghadreen, Aghadreenagh, Aghadreenan, Aghadrinagh; the field of the dreens or sloe bushes (draeighean).
Aghafad, Aghafadda; long field.
Aghagallon; the field of the gallan or standing stone.
Aghagower in Mayo; the correct name would be Aghafower, for the ancient form, as found in the old Lives of St. Patrick, is Achadh-fobhair, the field of the spring, from a celebrated well, now called St. Patrick’s well. The present form is written in Hy F., Achadh-gabhair, which means the field of the goat.
Aghamore; Achadh-mór, great field.
Aghanloo; Athan-Lugha, Lugh’s or Lewy’s little ford.
Aghavea in Fermanagh; Achadh-beithe [Ahabehy], F.M., the field of the birch trees.
Aghaveagh in Donegal and Tyrone; same as last.
Aghavilla, Aghaville, Aghavilly; Achadh-bhile,  the field of the bilě or old tree.
Aghaviller in Kilkenny; Arliadh-biorair [Ahabirrer], F.M., the field of the watercresses (r changed to l).
Aghindarragh in Tyrone; the field of the oak.
Aghintamy near Monaghan; Achadh-an-tsamhaidh, the field of the sorrel.
Aghmacart in Queen’s County; the field of Art’s son.
Aghnamullen in Monaghan; the field of the mills.
Aghnaskea, Aghnaskeagh, Aghnaskew; Achadh-na-sceach, the field of the white-thorn bushes.
Aghowle in Wicklow; Achadh-abhla, the field of the apple trees.
Aglish; Eaglais [aglish], a church.
Aglishcloghane in Tipperary; the church of the cloghaun or row of stepping stones.
Aglishcormick in Limerick; St. Cormac’s church.
Aglishdrinagh in Cork; Eaglais-draeighneach, the church of the dreens or sloe bushes.
Agolagh in Antrim; Ath-gobhlach, forked ford.
Ahane, Ahaun; Athán, little ford.
Ahaphuca; the ford of the pooka or spright.
Ahascragh in Galway; Ath-eascrach, F.M., the ford of the esker or sand-hill.
Aille Aill, a cliff.
Ahleen; Aillín, a little cliff.
Alt; Alt, a height, the side of a glen.
Altan; little cliff or glen side.
Altaturk; the glen side of the boar (torc).
Altavilla; the glen side of the bilě or old tree.
Altinure; Alt-an-iubhair [yure], the glen side of the yew tree.
Altnaveagh and Altnaveigh; Alt-na-bhfiach, the cliff or glen side of the fiachs or ravens.
Anna; same as Annagh, which see.
Annabella near Mallow; Eanach-bilě, the marsh of the bilě or old tree.
Annaclone; the marsh of the meadow (cluain).
Annacotty near Limerick; Athana-coite, the ford of the cot or little boat.
Annacramph in Armagh and Monaghan; Eanach-creamha, the marsh of the wild garlick.
Annaduff; Eanach-dubh, F.M., black marsh.
Annagh; Eanach, a marsh.
Annaghaskin in Dublin, near Bray; Eanach-easgann, the marsh of the eels.
Annaghbeg, Annaghmore; little marsh, great marsh.
Annahagh, Annahaia in Monaghan and Armagh; Ath-na-haithe, the ford of the kiln (aith).
Annahavil; Eanach-abhaill, the marsh of the orchard (abhall).
Annahilt in Down; Eanaoh-eilte, the marsh of the doe (eilit).
Annakisha; the ford of the kish or wickerwork causeway.
Annalong in Down; Ath-na-long, the ford of the ships (long): the ford was near the place where vessels used to be moored or anchored.
Annamoe in Wicklow; Ath-na-mbo, the ford of the cows (bo).
Anny; same as Annagh, which see.
Arboe in Tyrone; Ard-bo, the cow’s height.
Ard; high; a height.
Ardagh; Ard-achadh [Ard-aha], high field.
Ardaghy; same as Ardagh.
Ardan, Ardane, Ardaun; little ard or height.
Ardara in Donegal; Ard-a’-raith, the height of the rath, from a hill near the village, on which stands a conspicuous fort.
Ardataggle, Ardateggle; Ard-a’-tseagail, the height of the rye (seagal).
Ardbane, Ardbaun; white height.
Ardbeg; little height.
Ardbraccan in Meath; St. Brecan’s height. St. Brecan erected a church here in the sixth century, some time previous to his removal to the great island of Aran, where he had his chief establishment.
Ardcarn; the height of the carn or monumental heap.
Ardcath; the height of the battle (cath).
Ardee in Louth. Old English form Atherdee, which represents the Irish Ath-Fhirdia [Ahirdee], as it is written in Irish authorities; the ford of Ferdia, a chieftain who was slain there in battle by Cuchullin in the first century.
Ardeen in Cork and Kerry; little height.
Ardeevin; Ard-aeibhinn, beautiful height.
Arderin; the height of Erin or Ireland.
Ardfert in Kerry; Ard-ferta, F.M., the height of the grave. Sometimes called Ardfert-Brendan, from St. Brendan the navigator, who founded a monastery there in the sixth century.
Ardfinnan in Tipperary; the height of St. Finan, who founded a monastery there in the seventh century.
Ardgeeha; Ard-gaeithe, height of the wind.
Ardglass; Ard-glas, green height.
Ardgoul; Ard-gabhal, high fork.
Ardkeen; Ardcaein, beautiful height.
Ardkill; high church or wood (cill or coill).
Ardlougher; Ard-luachra, rushy height.
Ardmayle; Ard-Maille, F.M., Malley’s height.
Ardmeen; smooth height.
Ardmore in various counties; great height.
Ardmulchan in Meath; Ard-Maelchon, F.M., Maelchon’s height.
Ardnacrusha, Ardnacrushy; the height of the cross.
Ardnageeha, Ardnageehy; the height of the wind (gaeth).
Ardnanean; the height of the birds (en).
Ardnapreaghaun; the height of the prehauns or crows.
Ardnarea near Ballina;  Ard-na-riaghadh [reea], Hy F., the hill of the executions. Four persons were executed here in the seventh century, for the murder of Kellach, bishop of Kilmore-Moy.
Ardnurcher in Westmeath; a corruption of Athnurcher, from Ath-an-urchair, F.M., the ford of the cast or throw. According to a very ancient legend, a battle was fought here in the first century, between the Connaught and Ulster forces. Keth Mac Magach, a Connaught chief, threw a hard round ball at Conor mac Nessa, king of Ulster, and struck him on the head, from the effects of which the king died seven years afterwards.
Ardpatrick; St. Patrick’s height.
Ardrahan; Ard-nathain, the height of the ferns.
Ardskeagh the height of the skeaghs or bushes.
Ardstraw in Tyrone; Ard-sratha [Ard-srawha], F.M., the height of (or near) the river holm.
Ardvally in Donegal and Sligo; Ard-bhaile, high town.
Ardvarna, Ardvarness, Ardvarney, Ardvarnish; Ard­bhearna and Ard-bhearnas. high gap.
Arless in Queen’s County; Ard-lios, high fort.
Armagh; written in all Irish authorities Ard-Macha, which, in the Book of Armagh, is translated  Altitudo Machae, Macha’s height. From Queen Macha of the golden hair, who founded the palace of Emania, 300 years B.C.
Armoy in Antrim; Airthir Maighe [Arhir-moy], F.M., eastern plain.
Artimacormack in Antrim; Ard-tighe-Mic-Cormaic, the height of Mac Cormack’s house.
Artrea in Derry; Ard-Trea (Mart.Taml.), Trea’s height. The virgin St.Trea flourished in the fifth century.
Askeaton; took its name from the cataract on the Deel near the town, which the F.M. call Eas-Gephtine [Ass-Geftině], Gephtine’s cataract.
Assan, Assaun; small ass or waterfall.
Assaroe at Ballyshannon. The Book of Leinster states that Aedh-Ruadh [Ay- roo], queen Macha’s father (see Armagh), was drowned in this cataract, which was thence called from him Eas-Aedha-Ruaidh [Assayroo], Aedh-Ruadh’s waterfall.
Assey on the Boyne in Meath. The F.M. record that in A.D. 524 ‘‘the battle of Ath-Sithe [Ah-Shee] was gained by Muircheartach (king of Ireland) against the Leinstermen, where Sithe [Shee] the son of Dian was slain, from whom Ath-Sithe (Sithe’s ford) is called.”
Athenry; Ath-na-riogh [ree], F.M., the ford of the kings.
Athgoe in Dublin; the ford of the gow or smith.
Athlacca in Limerick; from a ford on the Morning Star river, called Ath-leacach, stony ford.
Athleague in Roscommon; Ath-liag, F.M., the ford of the stones.
Athlone; from the ancient ford over the Shannon, called in Irish authorities Ath-Luain, the ford of Luan, a man’s name.
Athneasy in Limerick; called in the F.M., Ath-na-nDeise [Athnaneasy], the ford of (the tribe of) the Desii, who inhabited the old territory of Deisbeag, round Knockany.
Athnid in Tipperary; the ford of the nead or bird’s nest.
Athnowen, a parish near Ballincollig in Cork; from a ford on the river Bride, called Ath-’n-uamhainn [Ath­nooan], the ford of the cave (uaimh), from the great limestone cave at “The Ovens,” near the ford.
Athy; One of the battles between Lewy and the Munstermen (see Abbeyleix), was fought at a ford on the Barrow, where a Munster chief Ae, was slain; and from him the place was called Ath-I (Wars of GG), the ford of Ae.
Attavahly; Ait-a’-bhalle, the site of the bally or town.
Atti or Atty in the beginning of a name, is the anglicised form of áit-tighe [aut-tee], the place or site of a house (áit and teach).
Attidermot; the site of Dermot’s house.
Attiduff; the site of the black house.
Attykit; the site of Ceat’s or Keth’s house.
Aughall in Tipperary and Aughil in Derry; Eochaill, the yew wood (eo and coill). See Youghal and Oghill.
Aughinish; Each-inls, F.M., the island of horses.
Aughnacloy; Achad-na-cloiche [Ahanacloha], the field of the stone.
Aughnahoy; Achadh-na-haithe, the field of the kiln (aith).
Aughnanure near Oughterard in Galway; Achadh-na-niúbhar [Ahananure], the field of the yew trees. One of the old yews still remains.
Aughnish; same as Aughinish.
Aughrim; the name is written in Irish documents, Each-dhruirm [Aghrim: dh silent], which Colgan translates Equi-rnons, the hill, druim, or ridge, of the horse (each).
Aughris, Aughrus; Each-ros, F.M., the peninsula of the horses.
Avalbane, Avalreagh ; white orchard, grey orchard (abhall).
Avonmore, Avonbeg; great river, little river (abhainn).
Aubeg; Abh-bheag, little river.
Ayle; same as Aille, which see.