Giraldus Cambrensis (Gerald of Wales)
The Forest of DeanWe went through Caerleon, passing far away on our left Monmouth Castle and the great Forest of Dean, which is across the Wye, but still on this side of the Severn, and which supplies Gloucester with venison an iron ore. We spent the night at Newport.
The Severn and the WyeThe Severn, which is a noble river, rises in the Plinlimmon mountains. It flows round Shrewsbury Castle, then by Brignorth Castle, on through the city of Worcester and then through Gloucester, with its iron-works. A few miles from Gloucester it runs into the Severn Sea, which takes its name from it. For many years this river formed the boundary between Cambria and Loegria, or Wales and southern England. It took its Welsh name of Hafren from that of a girl, the daughter of Locrinus, who was drowned there by her stepmother. The Latin aspirate has changed in S, just as happens when Greek words are borrowed by Latin, and so we now say Sabrina, or Severn. Other examples of this are 'sal' for 'hal', 'semi' for 'hemi', 'septem' for 'hepta'.