Gruffydd ap Llywelyn
- Born: Abt 1196
- Marriage (1): Senena verch Caradoc
- Died: 1 Mar 1244 about age 48
- Buried: Conway
Another name for Gruffydd was Griffith ap Llewellyn ap Iorwerth.
Source: Wikipedia - Llywelyn the Great
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. 121 has "Griffith, base son to Llewelin ap Ierworth, broke his neck to escape out of the Tower of London in the time of King Henry the Third, and was interred at Conway. (Quarterly gu. & or., 4 lions pass. gard. counterchanged.)
Gruffydd married Senena verch Caradoc, daughter of Caradoc ap Thomas of Anglesey and Unknown.