Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum (Llywarch Howlbwrch 2) gives Ieuan a number of 7 in his generational dating system, implying a birth date of, very roughly, about 1230.
Date of Death: unknown.
Place of Death: unknown.
Relationships
Father: Llywarch Fychan ap Llywarch Goch ab Iorwerth.
This relationship is shown by Bartrum (Llywarch Howlbwrch 2).
Mother: unknown.
Spouse: Angharad ferch Ithel Fychan.
This relationship is shown by Bartrum (Llywarch Howlbwrch 2).
Children (by Angharad):
(Complete source citations for facts about the children on this page are currently outside of the scope of this project.)
Ithel Llwyd
Cynwrig Fychan
Llywelyn of Tegeingl
Children (mother uncertain):
Maredudd
Ieuan y Deon Bychan o Degeingl married a daughter of Gruffudd Lediach ab Uchdrud.
References
Bartrum, Peter C. “Llywarch Howlbwrch 2” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Cadwgon are Peniarth 129 (71), (88b), (134), a manuscript copied from a 1497 manuscript by Gutun Owain when it was more complete; Peniarth 137 (111), a manuscript by ‘Syr’ Thomas ap Ieuan ap Deicws, c. 1510 - 1525; Peniarth 128 (258a), “Llyfr Edward ap Roger”, a manuscript written before 1582; and Peniarth 176 (138), a manuscript by Gruffudd Hiraethog, who died in 1564. ]