Hanes Cymru, a chenedl y Cymry, o'r cynoesoedd hyd at farwolaeth Llewelyn Ap Gruffydd : ynghyd a rhai cofiaint perthynol i'r amseroedd o'r pryd hynny i waered

In the first half of the nineteenth century scholarly enthusiasts, mostly clergymen, across Europe, actively wrote histories on the cultures of small or underprivileged nations. Carnhuanawc is the most obvious example of such an individual in Wales. He was inspired by the same ideas as the German philosopher Herder; that all cultures are uniquely significant and valuable. They also shared the belief that such cultures were mostly guarded by the numerous, yet lower and poorer classes. ‘Hanes Cymru’ or ‘A History of Wales to the Death of Llywelyn ap Gruffydd’ was, and is considered Carnhuanawc’s masterpiece. The publication appeared in fourteen separate volumes between 1836 and 1842. Though the author had an inadequate grasp on the historian’s duties, no other historical work would match that of Carnhuanawc for several years.