Gruffydd ap Heilen
(Abt 1275-)
Gwenhwyvar verch Jevan ap Gruffydd
Gruffydd ap David ap Tudor
(-Abt 1310)
Gwilym ap Gruffydd ap Heilen Lord of Penrhyn and Cwchwillan
(Abt 1300-After 1353)
Eva verch Gruffydd ap David of Cwchwillan
Gruffydd ap Gwilym Lord of Penrhyn and Cwchwillan
(Abt 1322-1405)


Family Links

1. Generys verch Madog ap Gronwy Fychan

Gruffydd ap Gwilym Lord of Penrhyn and Cwchwillan 1 2 3

  • Born: Abt 1322, Penrhyn Castle, Llandegai, (Bangor), Caernarfonshire, (Gwynedd), Wales
  • Marriage (1): Generys verch Madog ap Gronwy Fychan about 1360
  • Died: 1405, Austria-Hungary about age 83

   Other names for Gruffydd were Gruffydd ap Guilym and Griffith ap Gwilym.

  Research Notes:

The History of the Princes, the Lords Marcher, and the Ancient Nobility of Powys Fadog, Vol. IV, p. 342 shows him as "Gruffydd Gwilym, Lord of Penrhyn and Cwchwillan," who was the second son of "Gwilym Gruffydd, Lord of Penrhyn and Cwchwillan."

From Reifsnyder-Gillam Ancestry, p. 57:

'Wm. Vaughan (Vychan) Chamberlain of No. Wales (son of Gwilym ab Gruffydd ab Gullym ab Gruffydd ab Heilen, by his 2d wife Sioned (Jonet) D. of Sir W. Stanley of Hooton, Chamberlain of No. Wales and Chester), and had all the land of his father, adn the lands also of Paris, (from whom Paris Mountain), by his mother's influence, and in the 18th year of Henry VI. (1440) he got himself made a denizen of England, under covenant that he should not marry any Welsh woman, so he married Alice, dau. and heir of Sir Richard Dalton, kt., by a daughter of Lord Clifford, his wife. Their son, Sir william Griffith, Hael (the Liberal), m. Jane, dau. of Sir Wm. Troutbeck, Kt., by his wife, a sister to Sir Thomas Stanley.'


From Welsh Biography Online ( :

"(2) GRIFFITH AP GWILYM (d. 1405) m. (c. 1360) Generys, daughter and heiress of Madog ap Goronwy Fychan who was third in descent from Ednyfed Fychan through his son, Goronwy , ancestor of the Tudors (see under Ednyfed Fychan ). She brought to her husband lands at Gwredog in Anglesey, together with her share of the family lands at 'Gafael Goronwy ab Ednyfed,' in the township of Cororion in Caernarvonshire. 'Gafael Goronwy ab Ednyfed' was the nucleus of the Penrhyn estate and the whole Gafael corresponds roughly to the present Penrhyn demesne, or park. This marriage marks the first link between the Griffith family and Penrhyn, but Griffith ap Gwilym lived throughout his life in north-east Wales. With his brother BLEDDYN, he d. in rebellion with Owain Glyndwr (q.v.) before Oct. 1406, but Bleddyn's descendants, together with those of Griffith ap Gwilym, through his youngest son, Rhys, continued to be represented in Flintshire and Denbighshire until the 16th cent. The personal connection of the family with Anglesey and Caernarvonshire began with the eldest and second sons of Griffith ap Gwilym."

By the will of Gwilym ap Griffith of Llaniestyn, dated 1375, the son of Gwilym ap Griffith ap Heilen and Eva verch Griffith, Griffith ap Gwilym inherited further lands in Anglesey and Caernarvonshire.

Gruffydd married Generys verch Madog ap Gronwy Fychan, daughter of Madog ap Goronwy Fychan of Tref Castell and Margred verch Robert, about 1360. (Generys verch Madog ap Gronwy Fychan was born about 1326 in Penmynydd, Anglesey, Wales.)

  Marriage Notes:

Source: Welsh Biography Online (


1 Lloyd, Jacob Youde William, The History of the Princes, the Lords Marcher, and the Ancient Nobility of Powys Fadog, and the Ancient Lords of Arwystli, Cedewen, and Meirionydd. (Vol. 4. London: Whiting & Co., 1884.), p. 342.

2 Glenn, Thomas Allen, ed, Reifsnyder-Gillam Ancestry. (Philadelphia: (Privately Printed), 1902.), p. 57.

3 Honourable Society of Cymmrodorion, Dictionary of Welsh Biography (National Library of Wales. 2007. Welsh Biography Online. <> ), :.

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