• Home
  • About Us
  • Member Clans
    • B
    • C
    • D
    • F
    • H
    • M
    • S
  • Culture
    • Heraldry
    • Irish Clans
    • Traditional Attire
  • Articles
  • Events
  • Links
  • Privacy
  • More
    • Home
    • About Us
    • Member Clans
      • B
      • C
      • D
      • F
      • H
      • M
      • S
    • Culture
      • Heraldry
      • Irish Clans
      • Traditional Attire
    • Articles
    • Events
    • Links
    • Privacy
  • Home
  • About Us
  • Member Clans
    • B
    • C
    • D
    • F
    • H
    • M
    • S
  • Culture
    • Heraldry
    • Irish Clans
    • Traditional Attire
  • Articles
  • Events
  • Links
  • Privacy

Comhairle Chlanna na hÉireann
The Council of Irish Clans

Comhairle Chlanna na hÉireann The Council of Irish ClansComhairle Chlanna na hÉireann The Council of Irish ClansComhairle Chlanna na hÉireann The Council of Irish Clans

Connect with your Irish heritage

Connect with your Irish heritageConnect with your Irish heritageConnect with your Irish heritage

MacCarthy Reagh

Mac Cárthaigh Riabhach 

Of the Eóganachta: from the eponymous Carrthach (d. 1045 AD) came several MacCarthy septs. Sixth from Carrthach was Domhnall Goth mac Domhnall Mór, the founder of the MacCarthy Reagh Kings of Carbery.

Ancient Territory: The lands south of the Lee River, stretching from the Celtic Sea westward to Bantry Bay.

The MacCarthy Reagh: Sir Evan McCarthy Reagh KHS

Website

Mac Costigan

Mac Oistigín

The surname means ‘son of Hodgkin’, a diminutive of Hodge, i.e., Roger. Related surnames are Hasty, Hosty, and Mac Costy.

The earliest appearance of the name is from ca. 1400 AD in the Parish of Modreeny, Tipperary, where there is also an eponymous townland called Balile Hoiste (Ballyhasty). Notably, by the sixteenth and seventeenth centuries, the clan had expansive land holdings in Uí Fhaircheall (Offerlane), Laois.

Contact: Cynthia Costigan

Email

Mac Giolla Choiscle

The surname means son of ‘the lad of the left leg’. There are several English surname variants, including: Cosgrove; Cosgrave; McCasker; McCusker; and, Cushelly.

Ancient Territory: The clan originated in Fermanagh, in or nearby Derrybrusk, where the Mac Giolla Choiscle held termonlands..

Contact: Gareth McCasker

Email

McGeady

Mag Éidigh

The name probably derived from Éideach, a variant of Éadach, a personal name meaning cloth/cloth-maker. Variants are McGeddie and McGeedy.

Ancient Territory: A rare Irish clan located in the north west of County Donegal, primarily in the southern part of the parish of Tullobegly and the north western parts of Gartan parish.

Contact: Denis McGeady

Email

McGinley

Mag Fhionnghaile 

The clan name means 'son of Fionnghal' and old personal name derived from fionn 'fair-haired' and gal 'valour'.

Ancient Territory: in north Donegal we find an area containing three parishes; Tullaghobegley, Raymunterdoney and Clondahorky. This is believed to be the ancient centre of the Mag Fhionnghaile ~ McGinley clan.

Clan Chieftain: Proinsias Mag Fhionnghaile CIOM

Website

Molloy

Ó Maolmhuaidh

The name means descendant of Maolmhuadh, a personal name meaning 'noble or important chief'.

Ancient Territory: An important clan from County Offaly, they are of Southern Uí Néill, being a branch of the Clann Cholmáin. The modern placename Blue Ball was originally Pailís Uí Mhaolmhuaidh, 'Molloys Palace'.

Clan Chieftain: Bernard Molloy

Website

Morgan of Oriel

Ó Muireagáin Oirialla

The surname means 'descendant of Muireagán', a personal name containing the element muir/mara 'the sea' and possibly indicated a seafaring person.

The name of one of the chief families of Tethba, in modern-day County Longford and County Westmeath. Now numerous in County Armagh and County Down.

Contact: Colm Ó Muireagáin

Email

Copyright © 2025
The Council of Irish Clans
All Rights Reserved

Powered by

This website uses cookies.

We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.

Accept