These became the English administrative baronies of Corcomroe and Burren in the late 16th century.
Uí Fiachrach Aidhne was bounded on the north and east by the powerful independent kingdom of Hy-Many or Ui Maine; to the west by Lough Lurgan (Galway Bay) and the Corco Mo Druad (Corcomroe); and to the south by Déisi Tuisceart (later the Dál gCais, later still the O'Brian's of Thomond).
The O’Loghlens were descended from the princes of Corcomroe, in the Burren.