Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum (Llywarch Howlbwrch 2) gives Ieuan a number of 9 in his generational dating system, implying a birth date of, very roughly, about 1300.
Date of Death: unknown.
Place of Death: unknown.
Relationships
Father: Cadwgon ap Llywarch Fychan ap Llywarch Goch.
This relationship is shown by Bartrum (Llywarch Howlbwrch 2).
Mother: uncertain.
Bartrum shows Angharad ferch Ithel Fychan as the wife of Cadwgon, but doesn’t mark Ieuan as a child of this marriage. Also, Ieuan seems to have been significantly younger than his brothers, suggesting he may have been the son of another wife or concubine.
Spouse: a daughter of Gruffudd Lediach ab Uchdrud by a daughter of Gwgon Goch of Arllechwedd.
This relationship is shown by Bartrum (Llywarch Howlbwrch 2).
Children:
(Complete source citations for facts about the children on this page are currently outside of the scope of this project.)
Margred married Ralph Salusbury.
References
Bartrum, Peter C. “Llywarch Howlbwrch 2” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Ieuan are Peniarth 128 (275b) “Llyfr Edward ap Roger”, a manuscript written before 1582; and Peniarth 176 (138), 177 (198), and 135 (305), manuscripts by Gruffudd Hiraethog, who died in 1564.]