Coed Rhath. Although he survives the attack, he is unable to continue his military activities. 1152 21 February - Geoffrey of Monmouth is consecrated Bishop of St Asaph, ten days after being ordained a priest. Another quarrel takes place between Owain Gwynedd and his brother Cadwaladr; Cadwaladr goes into exile in England. 1153 Cadell ap Gruffydd makes a pilgrimage to Rome. His brothers Maredudd and Rhys ap Gruffydd drive Hywel ab Owain Gwynedd out of Ceredigion. Rhys ap Gruffydd attacks the territory of Owain Cyfeiliog, beginning a feud between the two princes, and captures the Norman castle at St Clears. 1154 Morgan ab Owain, grandson of Caradog ap Gruffydd, is recognised as lord of Caerleon by King Henry II of England. 1155 The sudden death of Maredudd ap Gruffydd leaves his brother Rhys sole ruler of Deheubarth. 1157 King Henry II of England invades Wales, with the support of Madog ap Maredudd, attacking Anglesey by sea. Following a highly successful ambush in Hawarden Woods (led by Owain's sons Dafydd and Cynan) near Ewloe in north-east Wales, Owain Gwynedd repulsed Henry II's army, his forces scattering in disarray and his royal standard was thrown to the ground; a symbol of surrender in those times. The standard bearer was later killed in a judicial duel connected to this humiliating retreat. King Henry escaped with his life but had suffered a humiliating set back. Realising that further confronting the Plantagenet king would be a highly risky affair, the subsequent peace agreement between Henry and Owain saw the latter buy peace with a certain number of cattle and, although he also cedes Tegeingl to Henry; it is recovered into Welsh hands in the late 1160s. Owain is also made to return his brother Cadwaladr to his former position. 1158 Rhys ap Gruffydd is forced to pay homage to King Henry II of England; Rhys temporarily loses Ceredigion and part of Ystrad Tywi. Ifor Bach makes a fatal attack on Morgan ab Owain of Caerleon; Morgan is succeeded by his brother Iorwerth. Later in the year, Ifor captures William, Earl of Gloucester, and his family from Cardiff Castle and holds them hostage pending the restoration of his own former lands. 1159 An alliance of English earls and some Welsh leaders (including Cadwaladr ap Gruffydd ap Cynan, Hywel ab Owain Gwynedd and Cynan ab Owain Gwynedd) unsuccessfully attempts to overthrow Rhys ap Gruffydd. 1160 Following the