 Llywelyn made his first move beyond the borders of Gwynedd in August 1202 when he raised a force to attack Gwenwynwyn ab Owain of Powys, who was now his main rival in Wales.The clergy intervened to make peace between Llywelyn and Gwenwynwyn and the invasion was called off.Elise ap Madog, lord of Penllyn, had refused to respond to Llywelyn's summons to arms and was stripped of almost all his lands by Llywelyn as punishment.