Born in or concerning the Bierzo, a region located to the West of Leon, vertebrate by the Sil River, tributary of the Miño basin. The name derives from the celtibérico oronimo Bergidom or Bergidum (Antonino itinerary City) which was latinised in Berizum as they certify documents of the 9th and 10th century. The Chronicon de el obispo de Oviedo Pelayo 12th century referring to Bermudo II of León: in Berizo vitam finivit. From the 9th century in the reign of Alfonso III of Asturias people of el Bierzo repopulated areas more to the South in the province of Zamora and why some municipalities in this province are called Bercianos Bercianos de Aliste, Valverde Bercianos or Bercianos de Virdia Les.
