Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum (Tudur Trefor 22) gives Iorwerth a number of 8 in his generational dating system, implying a birth date of, very roughly, about 1270.
Date of Death: unknown.
Place of Death: unknown.
Relationships
Father: Llywelyn ap Griffri ap Cadwgon.
This relationship is shown by Bartrum (Tudur Trefor 22).
Mother: Angharad ferch Maredudd ap Madog.
This relationship is shown by Bartrum (Tudur Trefor 22).
Spouse: Iorwerth ap Madog ap Gruffudd.
This relationship is shown by Bartrum (Tudur Trefor 22; Bleddyn ap Cynfyn 26).
Children:
Madog o’r Hendwr married Efa ferch Llywelyn.
References
Bartrum, Peter C., “Tudur Trefor 22” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Lleucu are: BM. Add. 14919 (132v), probably by Gutun Owain; Peniarth 127 (72, 151), written by Syr Thomas ap Ieuan ap Deicws between about 1510 and 1523; Peniarth 134 (70) by Gruffudd Hiraethog (died 1564).]