Events
Date of Birth: unknown.
Place of Birth: unknown.
Date of Death: unknown.
Place of Death: unknown.
Relationships
Father: Owain Cyfeiliog ap Gruffudd ap Maredudd.
This relationship is shown by Bartrum (Bleddyn ap Cynfyn 29).
Mother: Gwenllian ferch Owain Gwynedd.
This relationship is shown by Bartrum (Bleddyn ap Cynfyn 29).
Spouse: Gronwy ab Einion ap Seisyll.
This relationship is shown by Bartrum (Seisyll 1; Bleddyn ap Cynfyn 29).
Children:
(Complete source citations for facts about the children on this page are currently outside of the scope of this project. Most information below comes from Bartrum.)
Tudur (living 1271, 1278).
Gwȇn married Arddun ferch Ifor; also married a daughter of Owain.
Iorwerth married Morfudd ferch Madog ap Gruffudd Gȏch.
References
Bartrum, Peter C., “Bleddyn ap Cynfyn 29” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Meddefus are: Peniarth 127 (99), written by Syr Thomas ap Ieuan ap Deicws between about 1510 and 1523; Peniarth 128 (833a, 843b), “Llyfr Edward ap Roger”, written before 1582; Peniarth 135 (390) and Peniarth 139 part 1 (120), by Gruffudd Hiraethog (died 1564).]