In October 1171,Henry II landed in Waterford ,Ireland with a large army and marched on Dublin .
The king was in Ireland in an attempt to stop the Anglo Norman Lord ,Richard de Clare, 2nd Earl of Pembroke from proclaiming himself King of Ireland.
The Earl of Pembroke was better known as 'Strongbow' and was married to Aoife/Eva of Leinster (daughter of the king of Leinster)
The de Clare family had been a thorn in the side of the English king.
The king was the first English monarch to set foot in Ireland and arrived with a large retinue ,500 knights and 4,000 infantry.
After leaving Waterford the king and his army marched to the Rock of Cashel which was the seat of the Archbishop of Cashel .Here he met with both Gaelic and Norman Lords gathered affirmed their loyalty to Henry II (probably out of fear due to his army)
The king then moved to Dublin where he spent the Winter of 1171 and into 1172.
Here with the assistance of the Archbishop of Dublin ,Laurence O'Toole the king and Strongbow came to an agreement and Henry allowed him to have control over Leinster but excluded the towns of Dublin, Wexford and Waterford from his control.
The Archbishop of Dublin ,Laurence O'Toole was the maternal uncle of Eva/Aoife of Leinster ,the wife of Strongbow.
The king departed Ireland in April 1172 but left Norman garrisons in Dublin ,Wexford and Waterford
He also also created his close friend Hugh de Lacy ,Lord of Meath and granted him governorship of Dublin in a move to thwart any attempts by Strongbow to seize Dublin.
The arrival of Henry II at Waterford.