Various, The Mirror of Literature, Amusement…
“ Glamorgan is originally supposed to have extended from the river Tawy to Gloucester Bridge, including, besides the present county, the whole of Monmouthshire, and portions of the counties of Brecon, Hereford, and Gloucester. The Welsh princes of Glamorgan commenced paying tribute to the English in the reign of Edgar,—which was the cause of endless aggressions and disputes between them and the independent princes of North Wales, who claimed this right. ”
