Llywelyn ap Gruffydd (i-su s? "Llywelyn, Gruffydd e h?u-seⁿ "), (t?i-io?k 1228 ni kau 1282 ni 12 go?eh 11 ) s? to?k-li?p e Cymru si?ng-boe e thau-lang ; koh-lai Cymru h?· England e thau I e Edward chiam--khi. Cymru-gu k? i kio-cho Llywelyn Ein Llyw Olaf , i-su s? "Llywelyn, lan si?ng-boe e thau-lang".