Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum (Tudur Trefor 13) gives Myfanwy a number of 10 in his generational dating system, implying a birth date of, very roughly, about 1330.
Date of Burial: unknown.
Place of Burial: The Franciscan friary of Llan-faes, moved at the Dissolution to the parish church of Penmynydd.
The place is given by Carr (1975, p. 25).
Relationships
Father: Iorwerth Ddu ab Ednyfed Gam ab Iorwerth Foel.
This relationship is shown by Bartrum (Tudur Trefor 13), and given by Davies (p. 209), and by Carr (2004).
Mother: Angharad ferch Adda Gôch.
This relationship is shown by Bartrum (Tudur Trefor 13).
Spouse: Gronwy ap Tudur ap Gronwy.
This relationship is shown by Bartrum (Tudur Trefor 13; Marchudd 13), and given by Davies (p. 209), and by Carr. (2004)
Children:
Morfudd married Gwilym ap Gruffudd.
Tudur (died about 1400).
Evidence
Carr (2017, p. 223) gives, with his translation, this praise from the contemporary poet Rhisierdyn:
Myfanwy, lywy oleuwedd - briflwys,
Mygr hoywlamp Bowys, magwyr hywedd.
Gofynnai fawlgerdd yn gyfannedd,
Gwenlys eurswllt bobl, gwinllys orsedd
Gwasgawd inseilwawd ansalwedd - arfer,
Gymar hy ener, gem rhianedd
[Myfanwy, the fairest, pleasant and bright her appearance,
Fair and splendid lantern of Powys, patroness who provides rich feasts.
She was ever worthy of a poem of praise,
The fair [one] of the people, who receive a fine gift,
Patroness of true poetry full of beauty,
Partner of a gallant lord, a jewel among women]
References
Bartrum, Peter C., “Tudur Trefor 13” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Gronwy are: Peniarth 131 (99), written by Gutun Owain about 1480; Peniarth 129 (125), copied about 1500 from a 1497 MS by Gutun Owain; and Peniarth 127 (118, 122), written by Syr Thomas ap Ieuan ap Deicws between about 1510 and 1523.]
Carr, A.D. “Tudor family, forebears of (per.c.1215-1404)”, in the Oxford Dictionary of National Biography (Oxford University Press, 2004).
Carr, A.D. The Gentry of North Wales in the Later Middle Ages. (University of Wales Press, 2017).
Davies, R.R. The Revolt of Owain Glyn Dŵr. (Oxford U.P., 1995).