Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum gives Gwenllian a number of 8 in his generational dating system, which implies a birth date of, very roughly, about 1270.
Date of Death: unknown.
Place of Death: unknown.
Relationships
Father: Thomas ap Tegwared ab Iorwerth ap Cynddelw.
This relationship is shown by Bartrum (Iarddur 1).
Mother: unknown.
Spouse: Gruffudd ap Hywel ap Gruffudd.
This relationship is shown by Bartrum (Marchudd 14; Iarddur 1).
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.)
Robert married Dyddgu ferch Robert ap Gruffudd.
References
Bartrum, Peter C., “Iarddur 1” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Gwenllian are: Peniarth 127 (164, 168), written by Syr Thomas ap Ieuan ap Deicws between about 1510 and 1523; Peniarth 128 (677a), “Llyfr Edward ap Roger”, written before 1582; and Peniarth 134 (64, 294), by Gruffudd Hiraethog (died 1564).]