Shane

Declan

Old Irish · “Possibly derived from the Old Irish "Deaglán" or "Diaglán", with the most accepted interpretation being "full of goodness" or "man of prayer", though an alternate reading suggests "full of God" from "Dia" (God). Saint Declan of Ardmore was one of the earliest Christian missionaries in Ireland, predating Saint Patrick, and his name has been honoured in the Munster province for over fifteen centuries.”

Conor

Irish · “Anglicised form of the Irish "Conchobar" or "Conchobhar", derived from "con" (dog or wolf, used as an honorific for a great warrior) and "cobhar" (desiring or loving) — together possibly meaning "lover of hounds" or "wolf-lover". Conchobar mac Nessa was the king of Ulster in the Ulster Cycle of Irish mythology, the lord who ruled over the great warriors including Cúchulainn.”

Brendan

Irish / Old Welsh · “Anglicised form of the Irish "Breandán", which derives from the Old Welsh "breenhin" or the Brittonic "brennos" meaning "prince" or "king". The name is most famously associated with Saint Brendan the Navigator (c. 484–577 AD), an Irish monk from County Kerry whose legendary ocean voyage — the "Navigatio Sancti Brendani" — describes a fantastic seven-year journey across the Atlantic, possibly reaching the Americas centuries before Columbus.”

Niall

Old Irish · “An Old Irish name of debated etymology — most scholars derive it from a Proto-Celtic root meaning "champion", "cloud", or possibly "passionate". It is most famously borne by Niall of the Nine Hostages (Niall Noígíallach), the legendary High King of Ireland from around the 4th–5th century whose descendants, the Uí Néill dynasty, dominated Irish politics for centuries. Genetic studies suggest a remarkable proportion of men with Irish heritage descend from him.”

Saoirse

“From the Modern Irish "saoirse" meaning "freedom" or "liberty". Saoirse emerged as a given name in twentieth-century Ireland, part of a broader cultural movement to use Irish words of political and cultural significance as personal names. The name carries an obvious resonance with Irish nationalism and the struggle for independence, and has gained international recognition through the actress Saoirse Ronan.”

Neil

“Anglicised from the Irish Niall, a name of disputed meaning — proposed interpretations include "cloud," "passionate," "champion," and "vehement." The name was borne by several early Irish kings and saints, including Niall of the Nine Hostages, the legendary ancestor of the Uí Néill dynasty. Neil is the standard anglicised spelling used outside Ireland.”

Colleen

“From the Irish "cailín" meaning "girl" or "young woman". Uniquely among Irish names, Colleen originated not in Ireland but in the Irish diaspora of Australia and America, where English-speaking immigrants adopted the Irish word for "girl" as a given name. It was popularised through the theatrical phenomenon "The Colleen Bawn" (1860) by Dion Boucicault, the most performed play of the nineteenth century.”

Keenan

“An anglicised form of the Irish "Cianán" or "Caonán", diminutive forms meaning "little ancient one" (from "cian", ancient) or "little gentle one" (from "caon", gentle). The name was borne by several early Irish saints, including Saint Cianán of Duleek, who is credited with founding one of the earliest stone churches in Ireland at Duleek in County Meath in the fifth century.”

Eileen

“An anglicised form of the Irish "Eibhlín", which is itself an Irish adaptation of the Norman French "Aveline" or Old High German "Avelin", possibly meaning "wished-for child". Eibhlín entered Ireland with the Normans in the twelfth century and became fully naturalised, achieving a special place in Irish-language poetry — the lament "Caoineadh Airt Uí Laoghaire" features an Eibhlín whose grief became one of the great poems of the Irish oral tradition.”

Sinéad

“The Irish form of Jane or Janet, which are ultimately derived from the Hebrew "Yochanan" (Yahweh is gracious) via the Old French "Jehanne". Though ultimately of Hebrew origin, Sinéad is thoroughly and specifically Irish in character — it has been used in Ireland since the medieval period as the Irish equivalent of Jane and has been so completely naturalised that it functions as an authentically Irish name. Associated particularly with Irish music through singer Sinéad O'Connor.”