Дэвид ап Гриффит, последний принц Уэльса.
The article is devoted to Dafydd ap Gruffydd, the last native prince of Wales. Dafydd ap Gruffydd is considered to be the one who started the last war (1282-1283) ended with English conquest of Wales. Dafydd’s defeat and death signified the loss of independence of Wales. It is commonly accepted that Dafydd was the first man of noble rank to be hanged, drawn and quartered in England for a high treason. His trial was held before parliament. Dafydd ap Gruffydd has traditionally been described as an «evil genius» of Llywelyn the Last, a traitor who left his brother and people. This article is an attempt to analyze some causes of Dafydd’s acts from the political and legal points of view. Dafydd’s disagreement with Llywelyn’s policy aimed at reforming of traditional authority structures as well as his intentions to move into the marcher lordships must be taken into account. In addition, Dafydd’s role in the last war did not seem as unquestionable, since it was possible that Llywelyn had approved his attack. The research has been made with reference to a wide range of sources, including Welsh and English chronicles, official acts and letters of Welsh and English rulers.