that the neighbouring Norman lords were threatening Cantref Mawr. His nephew, Einion ab Anarawd, who was the captain of his bodyguard, had been murdered at the instigation of Roger de Clare, Earl of Hertford. The murderer had been given the protection of the Clares in Ceredigion. Rhys first appealed to the king to intercede; when this failed, he invaded Ceredigion and recaptured all of it apart from the town and castle of Cardigan. The Welsh revolt led to another invasion of Wales by King Henry in 1165. Henry attacked Gwynedd first, but instead of following the usual invasion route along the north coast he attacked from the south, following a route over the Berwyn hills. He was met by the united forces of the Welsh princes, led by Owain Gwynedd and including Rhys. According to Brut y Tywysogion: Torrential rain forced Henry's army to retreat in disorder without fighting a major battle, and Henry vented his spleen on the hostages, having Rhys's son Maredudd blinded. Rhys's other son, Hywel, was not among the victims. Rhys returned to Deheubarth where he captured and burned Cardigan Castle. He allowed the garrison to depart, but held the castellan, Robert Fitz-Stephen, as a prisoner. Shortly afterwards Rhys captured Cilgerran castle. In 1167 he joined Owain Gwynedd in an attack on Owain Cyfeiliog of southern Powys, and spent three weeks helping Owain besiege the Norman castle of Rhuddlan. In 1168 he attacked the Normans at Builth, destroying its castle. Rhys benefited from the Norman invasion of Ireland in 1169 and 1170, which was largely led by the Cambro-Norman lords of south Wales. In 1167 the King of Leinster, Diarmait Mac Murchada, who had been driven out of his kingdom, had asked Rhys to release Robert Fitz-Stephen from captivity to take part in an expedition to Ireland. Rhys did not oblige at the time, but released him the following year and in 1169 Fitz-Stephen led the vanguard of a Norman army which landed in Wexford. The leader of the Norman forces, Richard de Clare, 2nd Earl of Pembroke, known as "Strongbow", followed in 1170. According to Warren, "they were prompted to go by a growing suspicion that King Henry did not intend to renew his offensive against the Welsh, but was instead seeking an accommodation with the Welsh leaders". The departure of the Norman lords enabled Rhys to strengthen his position, and the death of Owain