|Haggarty||rare: Belfast etc. Ir. Ó h-Ágartaigh; Ó h-Ógartaigh, from fógartach "one who is proclaimed an outlaw". Alternatively, Ó h-Éigeartaigh, éigeart = injustice. This latter usually appears as Hegarty, q.v.|
|Hegarty||Very numerous: all areas: especially Cork, Derry-Donegal, Connacht etc. The Irish is Ó h-Éigeartaigh (unjust). A sept of Cineál Eoghain in Derry. There was another group, a branch of the Eoghanacht who were the ruling group in Munster, in Cork. IF & SGG.|
|Ó h-Éigeartaigh||rare: Dublin, Cork etc. Ir.Lang. See Hegarty and O'Hegarty.|
|Ó h-Éigeartaigh||(O)Hegarty: an-líonmhar ins gach aird, i gCorcaigh & i nDoire go sonrach. Clann de Chineál Eoghain in iarthar Uladh ó thús iad, ach craobh d'Eoghanacht na Mumhan, leis. Éigeartach = éagórach - aisteach go leor, bhí sé coitinn sa Mhumhain.|
|O'Hegarty||rare: Dublin etc. Ir. Ó h-Éigeartaigh (unjust). A sept of Cinéal Eoghain in Derry-Donegal, some of whom moved to Cork; the name usually appears as Hegarty, q.v. and sometimes as Haggerty in America. IF.|
Parishes where Haggarty and a second surname are found together
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