 The following year, however, saw the arrival of even more English support for Mac Murchada; and in August 1170, Richard de Clare, Earl of Pembroke landed in Ireland and took Waterford by storm.Soon after, Clare married Mac Murchada's daughter, Aífe, and effectively became heir to kingship of Leinster and the overlordship of Dublin.Unsurprisingly, later in September, the combined forces of Mac Murchada and Clare marched on Dublin, where they confronted Ua Conchobair and his forces.