Irish formMag Eochagáin
Meaning'son of Eochagán' (a diminutive of Eochaidh)
CountiesWestmeath, Galway, Dublin
Other spellings8
Origin of the Geoghegan name
Woulfe: an ancient Co. Westmeath family, a branch of the southern Ui Neill descended from Fiacha, son of Niall of the Nine Hostages, whence their clan-name Cinel Fhiachach. In the 16th century their patrimony comprised the barony of Moycashel; they were lords of Moycashel until the Cromwellian confiscations. A branch was transplanted to Co. Galway.[1]
- 1291Congalagh Mageoghegan, Chief of Kinel-Fiachach, died.[7]
- 1328The English 'sustained a great defeat from Mageoghegan' (Four Masters).[8]
- 1627Conall Mageoghegan finishes his English translation of annals 'sometimes called' the Annals of Clonmacnois.[9]
- 1690'MAC GEOHEGAINE' appears in Sir James Terry's list of Irish septs.[5]
- 1758First volume of Abbé MacGeoghegan's history of Ireland published in Paris.[10]
- 189038 birth entries including spelling varieties (33 spelled Geoghegan); principally Dublin and Galway.[3][6]
Geoghegan surname: questions
What does the surname Geoghegan mean?
Woulfe gives Geoghegan as a form of Mag Eochagáin, 'son of Eochagán', and calls Eochagán a diminutive of Eochaidh.[1]
Where in Ireland is the Geoghegan name from?
Woulfe calls the Mageoghegans an ancient family of Co. Westmeath, lords of Moycashel until the Cromwellian confiscations, with a branch transplanted to Co. Galway. In 1890 Geoghegan births were principally found in Dublin and Galway.[1][3]
Is Geoghegan the same as MacGeoghegan or Mageoghegan?
Yes. Woulfe lists Mageoghegan, MacGeoghegan and Geoghegan among the anglicised forms of Mag Eochagáin.[1]
Is Gahagan the same name as Geoghegan?
Woulfe lists Gahagan under Mag Eachagáin, which he calls a variant in Ulster of Mag Eochagáin, and Matheson's 1901 list gives Gahagan as a spelling of Geoghegan.[2][4]