Tegau Eurfron
Tegau Eurfron was a legendary Celtic queen of the Early Christian era who was the wife King Caradoc Vreichvras, whose kingdom is disputed but may have been Gwent or one of the Breton kingdoms. Records. To the monastic writers of the Middle Ages she was most notable for three things: her cloak (or mantle; one of the Thirteen Treasures of Britain), her loyalty and her seafaring. She is described as Caradoc's wife in the French Romances, "Livre de Carados" "(The Book of Caradoc)" and "Le Manteau Mal Taillé (The Badly Tailored Mantle)", short stories dated to the  end of the 12th century. The first record her being named 'Tegau' is found in the 14th century, in the work of Goronwy Ddu ap Tudur (1320–70) and in a poem by Dafydd ap Gwilym (fl.1340-70). Guto'r Glyn (fl.1440-93) compares his patroness with her, and his patron to Caradoc Vreichvras. He says her mantle reached the floor, but that the mantle of other girls was not so long. Around the same time Lewis Glyn Cothi (fl.1447-86) insisted that his patron was of the lineage of Caradoc and 'Thegau Eururon'. These poets refer to her as a symbol  of purity and fidelity to one's husband. She is referred to for the first time with the epithet 'Eurfron' in 1576. Her legend. The stories about Tegau spread from Wales, through Britain to France: