Iorwerth Drwyndwn

Madog would only accept the offer if Owain would confer a Lordship on Iorwerth to assure the solvency of the resulting new family unit.

[2] Iorwerth received Nant Conwy as his inheritance from his father, Owain Gwynedd, and was also permitted to retain his revenues as Lord of that commote.

[2] Few ancient sources describe Iorwerth's death, though contemporary writers claim he died in battle at a time when his son was still a small child.

John Edward Lloyd states that Iorwerth was killed in battle at Pennant Melangell, in Powys, in 1174 during the wars deciding the succession following the death of his father.

[3][4] Contrary to this, a contemporary elegy by the bard, Seisyll Bryffwrch states his grave was in Llandudclud, a church in Penmachno Nant Conwy.