Ó hÁgartaigh
Ó hÁGARTAIGH—I—O Hagirtie, Agarty, Hagarty, Hagerty, Hegarty, Hegerty, Heggerty, &c.; 'descendant of Fágartach' (same as Fógartach); a variant of Ó hÓgartaigh, which see. Compare with Ó hÁgáin for Ó hÓgáin.
Alphabetical Index to Irish Surnames