River Wye William Sandys in the early 1660s with locks to enable vessels to pass weirs. According to Herefordshire Council Archaeology, these were flash locks. The work proved to be insufficiently substantial and in 1696 a further Act of Parliament authorised the County of Hereford to buy up and demolish the mills on the Wye and Lugg. All locks and weirs were removed, except that at New Weir forge below Goodrich, which survived until about 1815. This was paid for by a tax on the county. Weirs were removed all along the Wye in Herefordshire, making the river passable to the western
England–Wales border its residents at the time spoke Welsh. In the late 17th century under Charles II it was added to the Oxford circuit of the English Assizes, following which, according to the 1911 Encyclopædia Britannica, it gradually "came to be regarded as an English county". Under that interpretation, the boundary between England and Wales passed down the Rhymney valley, along Monmouthshire's western borders with Brecknockshire and Glamorgan, so including Newport, and other industrialised parts of what would now generally be considered to be South Wales, within England. The 1911 Encyclopædia Britannica unambiguously described the county as part of England, but noted