Gruffydd ap Llywelyn

   Another name for Gruffydd was Griffith ap Llewellyn ap Iorwerth.

  Research Notes:

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.