Some manuscripts name her “Lleucu”.
Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum gives her a generation number of 10 in his dating scheme, implying a birth date in, very roughly, the first half of the 1300s.
Date of Death: unknown.
Place of Death: unknown.
Relationships
(possible) Father: Cynwrig Sais ab Ithel Fychan ab Ithel Llwyd.
This relationship is shown by Bartrum (Edwin 15). Carr (p. 66) notes that Cynwrig had several daughters, but the existence of only one of them (Alice) is attested by record evidence.
Mother: unknown.
Spouse: Gruffudd ap Madog Gloddiath ap Madog Fychan.
This relationship is shown by Bartrum (Mabon Glochydd 2; Edwin 15).
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.)
Angharad married (1) Llywelyn ap Hywel; married (2) Rhys ab Ieuan; married (3) Dafydd ap Maredudd.
Rhys married Gwerful ferch Dafydd Fychan; also married Catrin ferch Robin Llwyd.
Efa married Hwleyn ap Llywelyn Moel.
Mallt married Hywel ap Dafydd; also married Cwnws ap Dafydd Fychan.
References
Bartrum, Peter C., “Mabon Glochydd 2”, “Edwin 15” in An Electronic Version of Welsh Genealogies AD 300-1500. [The sources that Bartrum cites for Gwenllian are: Peniarth 131 (100), written by Gutun Owain about 1480; Peniarth 129 (123), copied from a 1497 MS by Gutun Owain; Peniarth 128 (825b), “Llyfr Edward ap Roger”, written before 1582; two manuscripts call her “Lleucu”: Peniarth 137 (55) ,written in the early 1500s by ‘Syr’ Thomas ap Ieuan ap Deiews, and Peniarth 176 (139, 168), by Gruffudd Hiraethog (died 1564).]
Carr, A.D. “Lineage, Power, and Land in Medieval Flintshire” in Flintshire Historical Society Journal Vol. 36 (2003), pp. 59-81.