Ancient Irish Names

These names were used in ancient Ireland. See Ancient Celtic names for a broader list.
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ÁEDÁNmAncient Irish, Irish Mythology
Older form of AODHÁN. This was the name of a 6th-century king of the Scots.
BRADÁNmAncient Irish
Derived from Irish Gaelic meaning "salmon".
BRÉANAINNmAncient Irish
Old Irish form of BRENDAN.
BRIANmEnglish, Irish, Ancient Irish
The meaning of this name is not known for certain but it is possibly related to the old Celtic element bre meaning "hill", or by extension "high, noble". It was borne by the semi-legendary Irish king Brian Boru, who thwarted Viking attempts to conquer Ireland in the 11th century. He was slain in the Battle of Clontarf, though his forces were decisively victorious. The name was common in Ireland before his time, and even more so afterwards. It came into use in England in the Middle Ages, introduced by Breton settlers. It subsequently became rare, but was revived in the 20th century.
CAISIDEmAncient Irish
Old Irish byname meaning "curly haired", from Irish Gaelic cas.
CAOMHmAncient Irish
Masculine form of CAOIMHE.
CAOMHÁNmAncient Irish
Diminutive of CAOMH. This was the name of a 6th-century Irish saint.
CATHASACHmAncient Irish
Means "vigilant" in Irish.
CORRAIDHÍNmAncient Irish
Means "little spear", derived from Irish corradh "spear" and a diminutive suffix.
Old Irish byname meaning "helpful".
DONNCHADmAncient Irish
Older Gaelic form of DUNCAN.
DONNDUBHÁNmAncient Irish
Composed of the Gaelic element donn "brown" combined with dubh "dark" and a diminutive suffix.
Old Irish name derived from dubh "dark, black" and either slán "defiance" or Sláine, the Gaelic name of the River Slaney.
DUBHTHACHmAncient Irish
Old Irish name derived from dubh "dark, black" in combination with a second element of unknown meaning.
FEIDLIMIDm & fAncient Irish, Irish Mythology
Possibly means "beauty" or "ever good" in Irish Gaelic. This was the name of three early kings of Munster.
GALCHOBHARmAncient Irish
Means "foreign help" in Irish.
LÓEGAIREmIrish Mythology, Ancient Irish
Means "calf herder", derived from Irish loagh "calf". In Irish mythology Lóegaire Búadach was an Ulster warrior. He saved the life of the poet Áed, but died in the process. This was also the name of several Irish high kings.
LUIGSECHfAncient Irish
Derived from the name of the Irish god LUGH.
MÁEDÓCmAncient Irish
Meaning unknown. Saint Máedóc (also known as Áedán) of Ferns was a 7th-century Irish bishop.
MÁEL MÁEDÓCmAncient Irish
Means "disciple of Saint MÁEDÓC" in Irish. Saint Máel Máedóc (also known as Malachy) was a 12th-century archbishop of Armagh.
Means "disciple of Saint SEACHNALL" in Irish. This was the name of two Irish high kings: Máel Sechnaill mac Máele Ruanaid who ruled all of Ireland in the 9th century; and Máel Sechnaill mac Domnaill (called Malachy) who defeated the Norse of Dublin in the 10th century.
Means "bear" in Irish Gaelic. This was the name of a brother of the Irish king Brian Boru.
MOCHÁNmAncient Irish
Derived from Irish moch "early" combined with a diminutive suffix.
NUALLÁNmAncient Irish
Derived from Irish nuall "noble, famous" combined with a diminutive suffix.
Derived from Irish sluaghadh "raid" and a diminutive suffix.
SUIBHNEmIrish, Scottish, Ancient Irish
Means "well-going" in Gaelic. This was the name of a 7th-century high king of Ireland.