Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum gives Gwenllian a number of 4 in his generational dating system, which implies a birth date of, very roughly, about 1130.
Date of Death: unknown.
Place of Death: unknown.
Relationships
Father: Rhys ap Bledri Latimer ap Cydifor Fawr.
This relationship is shown by Bartrum (Cydifor Fawr 1).
Mother: Angharad ferch Llywelyn Ddiriaid.
This relationship is shown by Bartrum (Cydifor Fawr 1).
Spouse: Trahaearn ap Gwgon ap Bleddyn.
This relationship is shown by Bartrum (Bleddyn ap Maenyrch 1; Cydifor Fawr 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.)
Hywel of Llan-gors married Nest ferch Gruffudd.
Joan married Madog ap Trahaearn.
Trahaearn Fychan (died 1197) married a niece of the Lord Rhys.
Ellyw married Rhys Gryg.
References
Bartrum, Peter C., “Cydifor Fawr 1” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Gwenllian are: Harley 2414 (288) by Llywelyn Siȏn (died 1615?), which calls her “Mared”; Cardiff 2.1 (47) by Dafydd Benywn, which calls her “Siwan”; Lewys Dwnn ii.50, which doesn’t name her; and Bag. 94, which doesn’t name her, and 121, which calls her “Gwenllian”. ]