Mac Diarmada
title: "Mac Diarmada" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["irish-families", "irish-language-surnames", "macdermot-family", "surnames-of-irish-origin", "patronymic-surnames", "surnames-derived-from-given-names", "gaels"] topic_path: "geography/ireland" source: "https://en.wikipedia.org/wiki/Mac_Diarmada" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::data[format=table title="Infobox family"]
| Field | Value |
|---|---|
| surname | McDermott |
| Mac Diarmada | |
| country | Kingdom of Connacht |
| parent house | Connachta (Uí Briúin Ai) |
| titles | * King of Moylurg |
| founder | Dermot mac Tadhg Mor |
| final ruler | Tadhg mac Diarmata |
| founding year | 1123 |
| historic seat | McDermott's Castle |
| :: |
| surname = McDermott Mac Diarmada | coat of arms = | country = Kingdom of Connacht | parent house = Connachta (Uí Briúin Ai) | titles = * King of Moylurg
| founder = Dermot mac Tadhg Mor | final ruler = Tadhg mac Diarmata | founding year = 1123 | historic seat = McDermott's Castle | dissolution = | cadet branches = Mac Diarmada (anglicised as McDermott or MacDermot), also spelled Mac Diarmata, is an Irish surname, and the surname of the ruling dynasty of Moylurg, a kingdom that existed in Connacht from the 10th to 16th centuries. The last ruling king was Tadhg mac Diarmata, who ruled until 1585.
Naming conventions
Main article: Irish personal naming system
::data[format=table]
| Male | Daughter | Wife (Long) | Wife (Short) |
|---|---|---|---|
| Mac Diarmada | Nic Dhiarmada | Bean Mhic Dhiarmada | Mhic Dhiarmada |
| :: |
History
The progenitor of the family was Dermot mac Tadhg Mor, 7th King of Moylurg, who reigned from 1124 to 1159. He was a vassal and kinsman of the Ó Conchubhair, Kings of Connacht; their common ancestor was Tadg mac Cathal, King of Connacht from 925 to 956. They were based at McDermott's Castle, Lough Key.
Later offshoot septs of the dynasty included the families of MacDermot Roe.
Moylurg ceased to exist as a kingdom in the late 16th century, though the senior line of the MacDermot's continued to live a sometime poverty-stricken and precarious existence despite land confiscations and the oppression of the Penal Laws. During this era they were popularly accorded the title Prince of Coolavin; the current incumbent is Francis MacDermot, who succeeded by birthright to his father Rory MacDermot who died on 6 May 2021.
Variants
Variations of the name include :
- McDermott
- MacDiarmada, MacDiarmata
- MacDermot Roe, MacDermott Roe
- McDermitt
- McDermett
- McDiarmid, MacDiarmid, Irish and Scottish language variants ultimately from Irish
- McDormand, MacDormand
- Kermode, Manx language variant
- Kermit, variant of Kermode
and others.
People
McDermot and MacDermot
- Conchobair MacDermot
- Dermot MacDermot
- Frank MacDermot
- Galt MacDermot (1928–2018), Canadian-American composer, pianist
- Hugh Hyacinth O'Rorke MacDermot
- Niall MacDermot
- Niall Anthony MacDermot
- Rory MacDermot
- Tomaltach na Cairge MacDermot
- Andrew McDermot (1790–1881), Irish-born fur trade merchant
- George McDermot (1841–1917), Irish lawyer, writer and priest
- Murrough McDermot O'Brien, 3rd Baron Inchiquin (1550–1573)
McDermott and MacDermott
Main article: McDermott
McDormand
- Frances McDormand, actress
Places
- McDermott Field, a baseball stadium in Idaho that was replaced by Melaleuca Field
- McDermott, Ohio, a census-designated place in western Rush Township, Scioto County, Ohio, United States.
References
References
- ''https://rip.ie/death-notice/rory-mac-dermot-gorey-wexford/457881 The death has occurred of Rory Mac Dermot''
- ''The Oxford Dictionary of Family Names in Britain and Ireland'', ed. by Patrick Hanks, Richard Coates, and Peter McClure, 4 vols (Oxford: Oxford University Press, 2016), III, p. 1461 [s.v. ''Kermode'']; {{ISBN. 978-0-19-967776-4.
- "PO Locator | USPS".
::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::