Isabel la Católica y su juramento so el Arbol de Guernica

Isabella the Catholic Queen swore the Jurisdictions of the Seignory of Bizkaia in 1483 since it was then the law that all King had to swear to uphold these Jurisdictions. The author transcribes the document by which this oath is taken. This took place in a single act in Gernika-Lumo and Larrabetzu