~1130, Iorwerth born in Wales at Aberffraw Castle, Aberffraw, Isle of Anglesey, eldest s/o 79958920. Owain Gwynedd ap Gruffydd & 79958921. Gwladys verch Llywarch.
Iowerth 1st married Angharad, d/o Uchdryd, bishop of Llandaff. (S) The Acts of Welsh Rulers, Pryce, 2005, P35.
12/19/1154, Henry II crowned king of England.
~1150, Marared born in Wales, d/o 79958922. Madog ap Maredudd, Prince of Powys & 79958923. Susanna verch Gruffydd.
1158, Iowerth ab Owain appointed to govern Uch Coed in north Wales by his father [after the death of his brother Morgan ab Owain]. His castle of Caerlleon was well located against a Norman expedition up the Usk valley.
1160, Marared’s father died.
11/23/1170, Iorwerth’s father died. Iorwerth the ‘flat nosed’ [Drwyndwn], on the death of his father was ‘set aside’ as successor, because of his disfigurement, for his younger brother Davyadd. Iowerth’s brother Hywel, a natural son of Owain Gwynedd ap Gruffydd, assumed the government. He was defeated in battle by Davyadd. (S) History of Wales, Jones, 1824, P73.
1171, Iowerth ab Owain and his brother Morgan issued joint charters in southeast Wales using a joint seal.
1171, King Henry II captured Caerleon from Iorwerth ab Owain. (S) Archaeologia Cambrensis, V152, 2005, P40.
By 1172, Iorwerth married Marared.
4/1172, King Henry on his return from Ireland, landing in south Wales, sent a safe-conduct writ to Iorwerth and his 2 sons Owain and Hywel. (S) South Wales Coast from Chepstow to Aberystwyth, 1911, P35.
1172, Owain [s/o Iorwerth by the 1st marriage], killed by William, earl of Gloucester, near Cardiff while under safe conduct on his way to peace talks with Henry II at Usk.
1173, Iorwerth ap Owain, retaking Caerleon, with his son Hywel [by the 1st marriage], subdued the whole land of Gwent Is-Coed except the castles, taking hostages from the chief men of the land.
1175, Those in opposition with Henry II accompanied Lord Rhys to Gloucester for a conference with the king … they were … Iorwerth ab Owain of Caerleon … (S) The English in the 12th Century, Gillingham, 2000, P61.
1176, Iorwerth fled from his brother Dafydd, but returned on a promise of having his lands restored.
1177, Iorwerth again had to flee from his brother and went to Pennant Mehangell.
~1179, Iorwerth [according to legend] killed in battle at Pennant Mehangell in Montgomeryshire, on a hill above Pennant Church.
(S) The Age of Owain Gwynedd, Barbier, 1908. (S) History of Wales, Caradoc of Llancarvan, 1832, Translated by Powell.
· Seisyll’s last known poem was his elegy in memory of Iorwerth ab Owain.
· Iorwerth’s Dolwyddelan castle was about 4 miles south of Capel Curig.
Children of Iorwerth and Marared:
i. Llywelyn-Fawr ap Iorwerth (19989730), born 1173 in Wales.
ii. Adda ap Iorwerth, born ? in Wales.
iii. Dafydd ap Iorwerth, born ? in Wales.