Hafren

Hafren was a legendary British princess who was drowned in the River Severn (Welsh: Hafren; Old Welsh: Habren) by her repudiated stepmother Gwendolen. The legend appears in Geoffrey of Monmouth's pseudohistorical chronicle Historia Regum Britanniae. 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).

In Geoffrey's Historia regum Britanniae (History of the Kings of Britain, c. 1138), was the beautiful daughter of King Locrin of the Britons by his secret lover, a Germanic princess named Estrildis. Her mother had been abducted by the Nordic "Huns" under Chief Humber and brought to Britain during their invasion following King Brutus' death; eventually the Hun invasion was suppressed by Locrin, Brutus' eldest son, who fell in love with Estrildis upon discovering her in one of Humber's ships.

Locrin been forced into a "diplomatic" marriage to Gwendolen, the daughter of King Corineus of Cornwall, but upon the death of Corineus, Locrin divorced her and made Estrildis his queen—thereby legitimizing Habren. Locrin's scorned first wife, the mother of his heir Maddan, raised a Cornish army against him, defeated him in battle, and had his widow and daughter drowned in the River Severn:

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