Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum (Bleddyn ap Cynfyn 30) gives Efa 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 Gruffudd ap Gwenwynwyn.
This relationship is shown by Bartrum (Bleddyn ap Cynfyn 30). Morgan shows it in a table (p. 34).
Mother: Margred ferch Maredudd Gôch ap Maredudd.
This relationship is shown by Bartrum (Bleddyn ap Cynfyn 30). Morgan's table (p. 34) shows Llywelyn's second wife, Sibyl, as Efa's mother.
Spouse: Madog o’r Hendwr ap Iorwerth ap Madog.
This relationship is shown by Bartrum (Bleddyn ap Cynfyn 26; Bleddyn ap Cynfyn 30). Morgan shows it in a table (p. 34).
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.)
Dafydd (living 1347) married Sibilla Cornwall.
Gwerful married Gronwy ap Tudur.
Gruffudd.
References
Bartrum, Peter C., “Bleddyn ap Cynfyn 30” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Madog are: Peniarth 127 (32, 71, 187), written by Syr Thomas ap Ieuan ap Deicws between about 1510 and 1523; Peniarth 128 (149b), “Llyfr Edward ap Roger”, written before 1582; and Peniarth 134 (70) by Gruffudd Hiraethog (died 1564).]
Morgan, R. “The Barony of Powys, 1275-1360” in The Welsh History Review 10 (1980).