Although the religious struggle was thus for a time postponed, the other vital Irish point the possession of the land now began to be pressed with new vigour. Fercal, Leix, and Offaly, belonging to the fierce tribes of the O'Moores, O'Dempseys, O'Connors, and O'Carrols, lay upon the Kildare frontier of the Pale, and had long been a standing menace to their more peaceful neighbours.