Events
Date of Birth: unknown.
Date of Death: unknown.
Relationships
Father: Gruffudd Fychan ap Gruffudd ap Madog.
This relationship is shown by Bartrum (Bleddyn ap Cynfyn 5). It is given by Mostyn (p. 29), by Dwnn (2:308, 2:327), by Lloyd (1:198, 4:146), and by Davies. Davies (endnote 20 to page 139) notes that the relationships given by Bartrum for Owain Glyn Dŵr’s family are supported in almost every connection by contemporary records such as deeds.
Mother: Elen ferch Thomas ap Llywelyn.
This relationship is shown by Bartrum (Bleddyn ap Cynfyn 5). It is given by Mostyn (p. 29), by Dwnn (2:308), by Lloyd (1:198, 4:146), by Pierce, and by Davies. Davies (endnote 20 to page 139) notes that the relationships given by Bartrum for Owain Glyn Dŵr’s family are supported in almost every connection by contemporary records such as deeds.
Spouse: Adda ab Iorwerth Ddu ab Ednyfed Gam.
This relationship is shown by Bartrum (Tudur Trefor 13, Bleddyn ap Cynfyn 5). It is given by Mostyn (p. 27, citing Dwnn and Cae Cyriog MS., fo. 62, Harl. MS. 4181), by Dwnn (3:308),and by Lloyd (4:146). Dwnn (2:327) gives Adda’s wife’s name as Lowri, daughter of “Griffydd Vychan ap Griffydd o Ryddallt”. Davies (p. 139) notes that a sister of Owain Glyn Dŵr was married to “Adda Moel ab Iorwerth Ddu, a member of one of the most prolific and powerful families of Chirkland.”
Children:
(Complete source citations for facts about the children on this page are currently outside of the scope of this project. The information below comes from Bartrum and Mostyn.)
Ieuan ab Adda married Angharad ferch Ednyfed.
Rhys ab Adda.
Maredudd ab Adda.
A daughter.
References
Bartrum, Peter C., “Tudur Trefor 13”, and “Bleddyn ap Cynfyn 5” in An Electronic Version of Welsh Genealogies AD 300-1500. [The sources Bartrum cites for Isabel are: Rhandiroedd Powys -- a MS written by 1493; Peniarth 129 (91, 104) -- a copy made about 1500 of a MS written about 1497 by Gutun Owain; Peniarth 137 (31, 196) -- a MS written in the early 1500s by ‘Syr’ Thomas ap Ieuan ap Deiews; Peniarth 138 (171) -- a MS written about 1562 by Thomas ab Llywelyn ab Ithel of Bodfard.]
Bartrum, Peter C. “Rhandiroedd Powys” in National Library of Wales journal, Volume 18, pp. 231-237 (1973). [Bartrum notes that it contains definite errors, but seems to have been regarded as authoritative by genealogists of the sixteenth century.]
Davies, R.R. The Revolt of Owain Glyn Dŵr. (Oxford U.P., 1995).
Dwnn, Lewys, and Samuel Rush Meyrick. Heraldic visitations of Wales and part of the marches between the years 1586 and 1613 by Lewys Dwnn. (Llandovery: William Rees, 1846).
Lloyd, Jacob Youde William. The History of the Princes, the Lords Marcher and the Ancient Nobility of Powys Fodog and the Ancient Lords of Arwystli, Cedewen and Meirionydd. (London: T. Richards, 1881-1887).
Mostyn, the Right Hon. Lord, and T. A. Glenn. History of the Family of Mostyn of Mostyn (London: Harrison and Sons, Ltd., 1925).
Oman, Sandra. “Isabel ferch Gruffudd "Fychan"” in Tree: Wales. Welsh Medieval Database Primarily of Nobility and Gentry.
Pierce, Thomas Jones. “Owain Glyndwr” in Welsh Biography Online.