[3] According to the legend, Jaun Zuria had been born from a Scottish or English princess who had been visited by the Basque deity Sugaar in the village of Mundaka.
It has been suggested that Jaun Zuria might have the same origin or be the same mythical figure as Olaf the White, an Irish Viking sea-king from the 9th century.
[citation needed] The Basque chronicler Lope García de Salazar (1399–1476) mentions don Çuria on his Bienandanzas e Fortunas, book that he begins to write in 1471.
[3] He speaks of the daughter of a Scottish king, who arrives by ship at Mundaka and gives birth to a son in the village.
An Asturian count named don Moñino knew about this situation, and thus forced the Biscayans to give him as a tribute a cow, an ox and a white horse every year.