Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum gives Gruffudd a number of 7 in his generational dating system, which implies a birth date of, very roughly, about 1230.
Date of Death: November 1282.
Place of Death: drowned in the Menai Straits, as a partisan of Edward I.
The date and place are given by Edwards (DWB sub Sir Gruffydd Llwyd) and by Roberts (DWB sub Hywel ap Gruffydd ap Iorwerth).
Relationships
Father: Gruffudd ab Ednyfed Fychan ap Cynwrig.
This relationship is shown by Bartrum (Marchudd 14), and given by Roberts (1969, p. 274), and by Carr.
Mother: Gwenllian ferch Hywel.
This relationship is shown by Bartrum (Marchudd 14).
(possible) Spouse: Tangwystl ferch Dafydd Goch.
This relationship is shown by Bartrum (Marchudd 14).
Children:
(Complete source citations for facts about the children on this page are currently outside of the scope of this project. Most information below comes from Bartrum.)
Catrin.
Gruffudd of Llansadwrn and Maenor Deilo married Nest Fechan ferch Gwrwared; also married Gwenllian ferch Thomas.
Evidence
Hywel is mentioned in a petition to Edward I dated about 1277 or 1278 (Pryce no. 94). Hywel had refused suit at Rhys ap Maredudd's court after having been made a knight:
...Derechef com Howel ab Griffyn doyt une seute a la curt le avaundyt Res de Lensadorn’, e memes celuy Howel pus k’il fu fet chevalere de cele seute fere sei ad il sustret, le avaundyt Res prie ke il eyt un bref a les bailiffs nostre seignour le rey de Dyneuor’ a destreindre le avaundyt Howel a fere cele seute a l’avaundyte curt com il soleit fere al tens le pere memes celuy Res….
References
Bartrum, Peter C., “Marchudd 14” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Sir Hywel are: Peniarth 131 (103), written by Gutun Owain about 1480; Peniarth 131 (67), written early in the reign of Henry VIII; Peniarth 131 (219), written by Ieuan Brechfa about 1500; Peniarth 129 (56), copied about 1500 from a 1497 MS by Gutun Owain; and Peniarth 127 (24), 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).
Edwards, Sir John Goronwy. “Sir Gruffydd Llwyd” in Welsh Biography Online.
Edwards, Sir John Goronwy. "Sir Gruffydd Llwyd" in The English Historical Review (1915).
Pryce, Huw. The Acts of the Welsh Rulers 1120 - 1283 (Cardiff: University of Wales Press, 2005)
Roberts, Glyn. “Hywel ab Gruffydd ap Iorwerth” in Welsh Biography Online.
Roberts, Glyn. “Wyrion Eden’: The Anglesey Descendants of Ednyfed Fychan in the Fourteenth Century” in Aspects of Welsh History. (University of Wales Press, 1969).