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Kings of Magh Luirg

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Project: British Isles Royals and Aristocrats 742-1499 --- Project: British Isles Royals and Aristocrats 1500-Present

This profile is part of the Magh Luirg, Ros Comáin One Place Study.

Magh Luirg or Magh Luirg an Dagda, Anglicised as Moylurg, was the name of a kingdom located in the north-east of Connacht, the western province of Ireland, from c. 956–1585 Prince of Coolavin from 1702. In 1103 broke away from the central polity of Osraige to form the kingdom of Mag Lacha in the far north of Osraige.


Kings of Magh Luirg

Early Kings

The MacDermot of the Carrick

  • 1585–1595 Brian Mac Diarmata (abt.1515-1592) Brian na Carriag MacDermot, first to be styled "MacDermot of the Carrick"
  • 1595–1603 Conchobar Óg MacDermot
  • 1603–1636 Brian Óg MacDermot,

The Chief of the Name

  • 1636–c.1652 Turlough MacDermot, first to be styled Chief of the name.
  • c.1652–c.1694 Cathal Roe MacDermot,
  • c.1694–1707 Hugh MacDermott,

The Prince of Coolavin

  • 1707–1758 Charles MacDermott, first to be styled Prince of Coolavin.
  • 1758–1792 Myles MacDermot,
  • 1792–1824 Hugh MacDermott, M.D.,
  • 1824–1873 Charles Joseph MacDermot, J.P.,
  • 1873–1904 Hugh Hyacinth O'Rorke MacDermot,
  • 1904–1947 Charles Edward MacDermot,
  • 1947–1979 Charles John MacDermot,
  • 1979–1989 Dermot MacDermot,
  • 1989–2003 Niall Anthony MacDermot,
  • 2004–2021Rory MacDermot, The MacDermot, Prince of Coolavin, Chief of the Name.
  • 2021-pres. Francis Mac Dermot, son of Rory


Also see:

The goal of this project

Right now this project just has one member, me. I am Richard Devlin.

Here are some of the tasks that I think need to be done. I'll be working on them, and could use your help.

Will you join me? Please post a comment here on this page, in G2G using the project tag, or send me a private message. Thanks!

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Comments: 3

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Hello Richard,

I have some rather extensive DNA research which applies specifically to the Clan Maelruanaidh, which includes evidence Tadg Ui Conchobair was not the father of Maelruanaidh Mor. My nearest DNA matches are MacDermot, and I have developed this spreadsheet ( https://docs.google.com/spreadsheets/d/1PqrXcqOthmIFHEAoF0G1k77F_mQ1wVKd/edit#gid=2039289674 ) to assist my search for the "real" ancestry of Maelruanaidh. I thought it might be beneficial to the whole project if I could place this along with my commentaries in a 'Space' similar to this https://www.wikitree.com/wiki/Space:The_Enoch_Brothers_and_their_Swedish_Descendants . I created this 2 years ago for my wife's family. What do you think?

Mike Rowley

posted by Michael Rowley
edited by Michael Rowley
Hi Mike,

This sounds like a great idea. I would be very interested in what you have found out. Are you working with a ftDNA group? I just sent a requesr to see your spread sheet.

Rich D,

posted by Richard Devlin

I contribute to the Sons of Aodh group on ftDNA. Much of the commentary I suggested posting is also on their activity feed. I approved your request. I may need help setting up the 'Space' page....I forgot how :-)


posted by Michael Rowley