Forester of Snowdon
Steward of the bishop of Bangor’s lands
Constable of Beaumaris Castle
Rhaglaw of Dindaethwy
Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum (Marchudd 13) gives Gronwy a number of 10 in his generational dating system, implying a birth date of, very roughly, about 1330.
Date of Death: 22 March 1382.
Place of Death: Kent.
The date and place are given by Roberts (p. 200). Carr (ODNB) gives 1382 and the place. Gronwy apparently drowned.
Place of Burial: the Franciscan friary at Llan-faes in Anglesey.
The place is given by Carr (ODNB). The monument of Gronwy and his wife Myfanwy is thought to be that now at Penmynydd church.
Relationships
Father: Tudur ap Gronwy ap Tudur.
This relationship is shown by Bartrum (Marchudd 13), and given by Roberts (WBO; 1969, p. 274), by Davies (p. 211), and by Carr (1990, p. 2; ODNB; MA p. 163).
Mother: Mallt ferch Madog ab Iorwerth.
This relationship is shown by Bartrum (Marchudd 13). Roberts (p. 198) and Carr (1975 p. 56) state that Gronwy's mother was Tudur's second wife, Margaret ferch Thomas ap Llywelyn.
Spouse: Myfanwy ferch Iorwerth Ddu ab Ednyfed Gam.
This relationship is shown by Bartrum (Marchudd 13), and given by Davies (p. 209), by Roberts (p. 200), and by Carr (ODNB; MA p. 262).
Children:
Morfudd married Gwilym ap Gruffudd.
Tudur (died about 1400).
References
Bartrum, Peter C., “Marchudd 13” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Gronwy are: Peniarth 129 (102, 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, Antony David. The Mostyn Family and Estate, 1200-1643 (PhD thesis, University of Wales, 1975).
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. “Tudor family, forebears of (per.c.1215-1404)”, in the Oxford Dictionary of National Biography (Oxford University Press, 2004).
Carr, A.D. Medieval Anglesey. (Anglesey Antiquarian Society, 2011 2nd ed.).
Davies, R.R. The Revolt of Owain Glyn Dŵr. (Oxford U.P., 1995).
Roberts, Glyn “GRIFFITH OF PENRHYN (Caerns.)” in Welsh Biography Online.
Roberts, Glyn. Aspects of Welsh History. (University of Wales Press, 1969).