MacCarthy Mac Cárthaigh |
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Armorial of MacCarthy |
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Country | Kingdom of Desmond |
Parent house | Eóganachta |
Titles | |
Founder | Cárthach mac Saorbhreathach |
Final ruler | Florence MacCarthy |
Current head | Liam Trant MacCarthy |
Cadet branches |
MacCarthy Reagh MacCarthy of Muskerry |
MacCarthy (Irish: Mac Cárthaigh), also spelled Macarthy, McCarthy or McCarty, is a Gaelic Irish clan originating from Munster, an area they ruled during the Middle Ages. It was and continues to be divided into several great branches. The MacCarthy Reagh, MacCarthy of Muskerry, and MacCarthy of Duhallow dynasties were the three most important of these, after the central or MacCarthy Mór line.
Their name, meaning "son of Cárthach" (whose name meant "loving"), is a common surname that originated in Ireland. As a surname, its prevalent spelling in the English language is McCarthy. Several variants are found, such as McCarty (most common in North America) as well as Carthy and Carty (though these latter are also the Anglicization of an unrelated name, Ó Cárthaigh). 60% of people with the surname in Ireland still live in County Cork where the family was very powerful in the Middle Ages.
The origin of the name begins with Carthach, an Eóganacht Chaisil king, who died in 1045 in a house fire deliberately started by one of the Lonergans (who were members of the Eóganacht's arch-enemies, the Dál gCais). Carthach was a contemporary and bitter rival of High-King Brian Boru, and what would become known as the McCarthy Clan was pushed out of its traditional homelands in the Golden Vale of Tipperary by the expansion of the O'Brien sept in the middle of the twelfth century.
Carthach's son was known as Muireadhach mac Carthaigh (meaning "Muireadhach, son of Carthach"). Such ephemeral patronymics were common at the time. However, when Muireadhach died in 1092 his sons Tadhg and Cormac adopted Mac Carthaigh as an actual surname. Following the treaty of Glanmire in 1118, dividing the kingdom of Munster into Desmond and Thomond, this Tadhg became the first king of Desmond, comprising parts of the modern counties of Cork and Kerry. For almost five centuries they dominated much of Munster, with four major branches: those led by the MacCarthy Mór (Great MacCarthy), nominal head of all the MacCarthys, who ruled over much of south Kerry, the Duhallow MacCarthys, who controlled northwest Cork; MacCarthy Reagh or Riabhach ('grey') based in the Barony of Carbery in southwest Cork; and MacCarthy Muskerry, on the Cork / Kerry border.