Iorwerth Fychan was of Pengwern. He succeeded his father as seneschal to the House of Northern Powys. (Mostyn 15)
Events
Date of Birth: unknown.
Place of Birth: unknown.
Living: 1235, 1254.
Mostyn gives these dates. In 1254, Iorwerth Fychan, as Jervasio Senescałł meo, was a witness to a charter from Gruffydd ap Madog “Lord of Bromfield” to Valle Crucis. (Mostyn p.15)
Date of Death: probably before 21 December 1270.
His son Iorwerth Foel is a witness to a charter at Dinas Bran on this date. (Mostyn pp. 15-16).
Relationships
Father: Yr Hên Iorwerth ab Owain ap Bleddyn
This relationship is shown by Bartrum (Tudur Trefor 10), and given by Mostyn (p. 15), by Dwnn (2:307), by Lloyd (1:313), and by Carr (1975 p. 369).
Mother: Angharad ferch Gruffudd ap Meilir Eutun
This relationship is shown by Bartrum (Tudur Trefor 10), and given by Mostyn (p. 15), by Dwnn (2:307), by Lloyd (1:313), and by Carr (1975 p. 369).
Spouse: Catrin ferch Gruffudd ap Llywelyn Fawr. Married about 1240.
This relationship is shown by Bartrum (Tudur Trefor 10, Gruffudd ap Cynan 5), and given by Mostyn (p. 15), Dwnn (2:307), Lloyd (1:313), and by Carr (1975 p. 369). Mostyn (pp. 189-190) gives these authorities for the marriage: Dwnn, pedigree of “Mostyn of Mostyn”; Harl. MS. (Brit. Mus.) 4181 (p. 266) folio 135 dorso; N.L.W. MS 1560 C. (A. Lloyd MS., p. 61) copied from “Llyfr Achau a ‘sgrifennwd allan o Llyfr maur a fenthygiwyd gan Lewis Owen” (Peniarth) (Mostyn). Compiled after 1596 and before 1596. The date is given by Mostyn (p. 15), presumably based on the date of the death of Catrin’s first husband.
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 Mostyn (p. 17))
Iorwerth Foel married Gwladus ferch Iorwerth.
Tudur
Cynfrig
Rhys
Einion
daughters
References
Bartrum, Peter C., “Tudur Trefor 10” and “Gruffudd ap Cynan 5” in An Electronic Version of Welsh Genealogies AD 300-1500. [Bartrum identifies “Iorwerth Goeg” and “Iorwerth Fychan”. The sources Bartrum cites for Iorwerth Goeg are: Peniarth 131 (127, 133) -- a MS written about 1480 by Gutun Owain; Mostyn 113 (145) -- written by “Syr” John Powys about 1514 and copied by Roger Morris of Coedytalwrn in 1572. The sources Bartrum cites for Iorwerth Fychan are: Peniarth 131 (127) -- a MS written about 1480 by Gutun Owain; Peniarth 129 (42, 58) -- a copy made about 1500 of a MS written about 1497 by Gutun Owain; Peniarth 137 (21) -- a MS written in the early 1500s by ‘Syr’ Thomas ap Ieuan ap Deiews.]
Carr, Antony David. The Mostyn Family and Estate, 1200-1643 (PhD thesis, University of Wales, 1975).
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. “Iorwerth "Fychan" ab Iorwerth "Yr Hên"” in Tree: Wales. Welsh Medieval Database Primarily of Nobility and Gentry. [This resource, which mainly gathers references from secondary sources, appears to be currently offline (July 2016).]
Commentary
It is not clear to me how much weight to give the sources for Iorwerth Fychan’s marriage.