Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum gives him a generation number of 6 in his dating scheme, implying a birth date in about, very roughly, 1200.
Date of Death: in or shortly after 1256.
Place of Death: unknown.
The date is given by Pryce (p. 224).
Place of Burial: Bangor.
The place is given by Pryce (p. 224).
Relationships
Father: Ednyfed Fychan ap Cynwrig ab Iorwerth.
This relationship is shown by Bartrum (Marchudd 4) and given by Roberts (p. 184).
Mother: Gwenllian ferch Rhys.
This relationship is shown by Bartrum (Marchudd 4). The relationship is emphasized in a contemporary grant to Gruffudd by a relative of Gwenllian (Pryce no. 84).
Spouse: Gwenllian ferch Hywel.
This relationship is shown by Bartrum (Marchudd 14).
Spouse: Margred ferch Einion ap Gwalchmai.
This relationship is shown by Bartrum (Marchudd 14).
Children (by Gwenllian):
(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.)
Sir Hywel (died 1282) married Tangwystl ferch Dafydd Goch.
Children (by Margred):
Gwenllian married Hywel ap Maredudd.
Children (mother uncertain):
Lleucu married Einion Fawr.
Rhys (died 1284) married Gwenllian ferch Cynan.
Elen married Dafydd ab Einion.
Catrin married Philip ap Trahaearn.
Dafydd Llwyd.
Evidence
Dwnn (2:101) has this footnote: "Gruffydd ap Ednyfed Vychan "fled to Ireland, for sum slander given to him touching Joane, daughter to King John, and wife to Prince Llewelyn ap Iorwarth, and stayed there as long as the Prince lived, and was highly entertained." From a letter in Harleian MS., 1971, folio 106, quoting, as its authority, a book of pedigrees by "Jon Tydir of the p'ish of St Asaph an ould poet." (of Wigwair, near St. Asaph, who died in 1602). Prince Llewelyn, above mentioned, died in 1210.
Pryce (no. 84) records a grant from Rhys Mechyll ap Rhys Gryg to Gruffudd ab Ednyfed dated between 1236 and 1244.
References
Bartrum, Peter C., “Marchudd 4”, “Marchudd 14” in An Electronic Version of Welsh Genealogies AD 300-1500. [The sources that Bartrum cites for Gruffudd are: Plant y Arglwydd Rhys (2b) copied about 1500, probably from a late 14th century original; Peniarth 131 (19, 43), written early in the reign of Henry VIII; Peniarth 137 (167) by Syr Thomas ab Ieuan ap Deiews, written between 1510 and 1523; and Peniarth 176 (185), written by Gruffudd Hiraethog (died 1564).]
Carr, Antony David. The Mostyn Family and Estate, 1200-1643 (PhD thesis, University of Wales, 1975).
Dwnn, Lewys. Heraldic visitations of Wales and part of the marches between the years 1586 and 1613 by Lewys Dwnn. (Llandovery: William Rees, 1846).
Pryce, Huw. The Acts of the Welsh Rulers 1120 - 1283 (Cardiff: University of Wales Press, 2005)
Roberts, Glyn. “Wyrion Eden’: The Anglesey Descendants of Ednyfed Fychan in the Fourteenth Century” in Aspects of Welsh History. (University of Wales Press, 1969).