Gruffydd ap Madog ap Gruffudd Fychan of Rhuddallt
- Born: 23 Nov 1298
- Marriage (1): Elizabeth le Strange on 8 Jul 1304
- Died: After 1343
- Buried: Valle Crucis Abbey, Llantysilio, Denbighshire, Wales
Other names for Gruffydd were Griffith ap Madoc Vychan of Ruddalt, Gryffydd ap Madoc Vychan Baron of Glyndyfrdwy and Lord of Rhuddalt and Gruffudd ap Madog ap Gruffudd Fychan.
Source: Ancestral Roots of Certain American Colonists Who Came to America before 1700 by Frederick Lewis Weis and Walter Lee Sheppard, Jr, ed. by William R. Beall & Kaleen E. Beall, Baltimore, 2008, Line 249-33 (Elizabeth le Strange).
Source: A History of Wales by John Davies, London, 2007, p. 81
He is the great-great-great grandson of Gruffudd Maelor I. He is Madog's eldest son.
Also familysearch.org (Kevin Bradford) - has b. 23 Nov 1298, d. aft 1343
Source: Collections Historical & Archaeological Relating to Montgomeryshire, and its Borders, Vol. XIII, Issued by the Powys-Land Club for the Use of Its Members, London, 1880, p. 123 has "Griffith ap Madoc Vychan of Ruddalt, died Ao 1370, and was buried at Vale Crucis. (The like.)"
Gruffydd married Elizabeth le Strange, daughter of John V le Strange of Knokyn and Maud de Walton, on 8 Jul 1304. (Elizabeth le Strange was born in 1298 and died after 1320.)