Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum (Marchudd 5) gives Gruffudd a number of 8 in his generational dating system, implying a birth date of, very roughly, about 1270.
Date of Death: about 1340.
Place of Death: unknown.
The date is given by Roberts.
Relationships
Father: Heilin ap Tudur ap Ednyfed Fychan.
This relationship is shown by Bartrum (Marchudd 5), and given by Carr (1990, p. 2; 2001, p. 268), and by Roberts.
Mother: uncertain.
Sources disagree about which of Heilin’s wives was Gruffudd’s mother.
Spouse: unknown.
Children:
Gwilym (died about 1370) married Efa ferch Gruffudd.
References
Bartrum, Peter C., “Marchudd 5” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Gruffudd 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).