Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum (Marchudd 5) gives Gwilym a number of 9 in his generational dating system, implying a birth date of, very roughly, about 1300.
Date of Death: about 1370.
Place of Death: unknown.
The date is given by Roberts.
Relationships
Father: Gruffudd ap Heilin ap Tudur.
This relationship is shown by Bartrum (Marchudd 5), and given by Carr (1990, p. 2; 2001, p. 268), and by Roberts.
Mother: unknown.
Spouse: Efa ferch Gruffudd ap Tudur. Married about 1340.
This relationship is given by Roberts and by Carr (1990, p. 1; 2001, p. 268). Bartrum (Marchudd 5) has Efa as Gwilym’s mother rather than wife, but Roberts states that traditional pedigrees had Efa in the wrong generation.
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.)
Gruffudd (died 1405) married Generys ferch Madog ap Gronwy Fychan.
Bleddyn married Gwenllian ferch Ieuaf.
References
Bartrum, Peter C., “Marchudd 5” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Gwilym are: Peniarth 131 (93), written by Gutun Owain about 1480; Peniarth 131 (49), written early in the reign of Henry VIII; Peniarth 129 (62), copied about 1500 from a 1497 MS by Gutun Owain; Peniarth 127 (22), written by Syr Thomas ap Ieuan ap Deicws between about 1510 and 1523.]
Carr, A.D. “Gwilym ap Gruffydd and the Rise of the Penrhyn Estate” in Welsh History Review Vol. 15, no. 1 (June 1990), pp. 1-20.
Carr, A.D. Medieval Anglesey. (Anglesey Antiquarian Society, 2011 2nd ed.).
Roberts, Glyn “GRIFFITH OF PENRHYN (Caerns.)” in Welsh Biography Online.
Roberts, Glyn “Teulu Penmynydd” in Transactions of the Honourable Society of Cymmrodorion (1959).