Mac Diarmada (anglicised as 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.
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 Rory MacDermot, who succeeded his father in 2003.
Variations of the name include
McDermott, MacDermottMacDiarmada, MacDiarmataMacDermot Roe, MacDermott RoeMcDermittMcDiarmid, MacDiarmid, Scottish language variantsMacDormandKermode, Manx language variantKermit, variant of Kermodeand others.
Conchobair MacDermotDermot MacDermotFrank MacDermotGalt MacDermotHugh Hyacinth O'Rorke MacDermotNiall MacDermotNiall Anthony MacDermotRory MacDermotSeán Mac DiarmadaTomaltach na Cairge MacDermotAlice McDermott, writerAlister McDermott, cricketerAndrew McDermott (born 1966), English singerAndrew McDermott (footballer) (1889–1915), Scottish footballerAndy McDermott, authorBill McDermott, executiveBrian McDermott, several peopleBrian McDermott, rugby coachBrian McDermott, football manager of Reading F.C.Brian McDermott, child who was murdered in Belfast in 1973.Bobby McDermott, basketball playerCharlie McDermott, American actorChris McDermott (born 1963), Australian rule player from South AustraliaChristopher McDermott (born 1989), British handball player and coach, Olympian London 2012Craig McDermott, cricketerDavid McDermott, English footballerDean McDermott (born 1966), Canadian-American actorDoug McDermott (born 1992), American basketball player; son of Greg McDermott (see below)Drew McDermott, computer scientistDylan McDermott (born 1961), American actorEugene McDermott, geophysicist, philanthropist; co-founder, Chairman, Director of Texas InstrumentsGerald McDermott, American author, illustrator, graphic designer, and film makerGerard McDermott, Queens council BarristerGreg McDermott (born 1964), American basketball coachHelen McDermott, British radio and television presenter, best known for her work at Anglia TelevisionJames McDermott, several peopleJames J. McDermott, Jr., former CEO and Chairman of Keefe, Bruyette & WoodsJim McDermott (born 1936), American politicianJohn McDermott, several peopleJohn McDermott, American golferJoseph McDermott, several peopleKevin McDermott, several peopleKevin McDermott, Scottish singer-songwriterKevin McDermott, American football playerMelissa McDermott, CBS news anchor and reporterMichael McDermott, several peopleMichael McDermott, software engineer who carried out the 2000 Wakefield massacreMichael McDermott, Chicago singer-songwriterMickey McDermott, baseball pitcherMike McDermott, several peopleNeale McDermott, football playerNeil McDermott (born 1980), British actorPatrick McDermott, long-time boyfriend of Olivia Newton-JohnPaul McDermott, Australian comedianPaul Francis McDermott (born 1965), Australian electro-pop musician, performs as Paul MacPhelim McDermott (born 1963), English actor and stage directorRobert McDermott, several peopleTerry McDermott, several peopleTerry McDermott, football playerThomas McDermott, several peopleTracey McDermott, acting chief executive of Britain's Financial Conduct Authority (FCA)William Dermott Molloy McDermott, Roman Catholic bishopAmbrose MacDermott, Bishop of Elphin from 1707 to 1717Cormac MacDermottG. H. MacDermottJohn MacDermott, Baron MacDermottSean MacDermottMcDermott Field, a baseball stadium in Idaho that was replaced by Melaleuca Field
