Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum given Cynon a number of 2 in his generational dating system, which implies a birth date of, very roughly, about 1070.
Date of Death: unknown.
Place of Death: unknown.
Relationships
Father: Llywarch Howlbwrch.
This relationship is shown by Bartrum (Llywarch Howlbwrch 1).
Mother: Tangwystl ferch Iago ab Idwal.
This relationship is shown by Bartrum (Llywarch Howlbwrch 1).
Spouse: a daughter of Cadwallon ap Cadrod, arglwydd Mochnant
This relationship is shown by Bartrum (Llywarch Howlbwrch 1).
Children:
(Complete source citations for facts about the children on this page are currently outside of the scope of this project. The information below comes from Bartrum.)
Ieuaf.
Einion.
Meurig.
Nyniad.
Cyfnerth.
Iorwerth married a daughter of Ithel ab Einudd.
Pill.
References
Bartrum, Peter C., “Llywarch Howlbrwch 1” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources Bartrum cites for Iorwerth are: The Survey of the Honour of Denbigh, 1334 (80, 96); Peniarth 131 (52, 66), written early in the reign of Henry VIII; Peniarth 128 (265a), “Llyfr Edward ap Roger”, written before 1582; Peniarth 176 (101, 107), Peniarth 177 (317), and Peniarth 178 part 1 (42) by Gruffudd Hiraethog (died 1564).]