Gwenllian married the Great Llewellyn Ap Iorwerth Of WalesWales. Llewellyn (son of Crooked Nose Iorwerth Drwyndwn ap Owain Gwynedd Of Wales and Margaret Of Wales) was born in 1173 in probably at Dolwyddela; died on 4 Nov 1240 in Aberconwy. [Group Sheet] [Family Chart]