Hafren

According to Geoffrey, Hafren is the eponym of the Severn, which bears one of Britain's most ancient river names (recorded as early as the 2nd century in the Latinized form Sabrina).

[3][4][5] According to local legends reported by the antiquarian Thomas Pennant, Hafren was drowned at Dolforwyn Castle; Dôl-forwyn literally means 'maiden's meadow' in Welsh.

When Corineus dies, Gwendolen's army fights Locrinus' forces at the River Stour, and after killing him she hurries to Caersws and seizes Estrildis and Sabra.

She orders Estrildis to be killed immediately, but was "so moved by the supernatural loveliness of Sabra, that many days elapsed before she could be persuaded to condemn her to death".

[12] In 1858 the architect and designer, William Burges, produced drawings and plans for a fountain commemorating Sabrina to be located in the city of Gloucester, but it was never constructed.