Once among the most powerful families of Connacht, the Mageraghty chiefs were reduced to renting 1,970 acres from the O’Kellys. Conor McGirraght appears in THE TRIBES AND CUSTOM OF HY-MANY, COMMONLY CALLED O'KELLY'S COUNTRY (1585):
"Agreement between the Irish chieftains and inhabitants of Imany, called the O'Kellie's country, on both sides of the river of Suck, in Connaught, and the Queen's Majesty, viz. Hugh O'Kelly of Lisecalhonec , otherwise called O'KELLY, Teige Mac William O'Kelly, of Mullaghmore d , and Connor Oge O'Kelly, of Killiane6 , competitors for the name of Tanestshippe of O'KELLY Connor ne Garroglie O'Kelly, of Gallaghe f , and Shane ne Moye O'Kelly, of the Criagheg , Generosus ; William O'Mannine, of Mynloghe h , otherwise called O'MANNINE ; Moriartagh O'Concannon, of Kiltullagh 1, otherwise called O'CoNCANNON ; Shane O'Naghten, of MoynureJ, otherwise called O'NAGHTEN ; Edmond Mac Keoghe, of Owenagh k , otherwise called MAC KEOGHE ; Donoerh O'Murry, of Ballymurry 1 , otherwise called O'MuRRY ; Covaghe O'Fallone, of the Milltownem , otherwise called O'FALLONE ; and Connor Mac Geraghte, otherwise called MAC GERRAGHTED."
Another document from 1609 mentions the McGirraght possessing Aghgad, Aghagowre, BallymcGirraght and Tobervaddy (townlands) belonging to Fuerty parish." This was O’Kelly country, and McGirraght would have paid 20 shillings rent to his overlord.