The bishop and the Basques: The diocese of Calahorra and the Basque provinces of Alava and Vizcaya under Bishop Rodrigo Cascante, 1147-1190

Under Bishop Rodrigo Cascante (1147-90), the northern Iberian diocese of Calahorra made its first significant administrative inroads into Alava and Vizcaya since its nominal assimilation of those Basque provinces around 1090. An examination into the fluctuating history of Calahorra's administrative penetration of its Basque provinces during this period highlights the extreme difficulty of this undertaking, which was severely hampered by the opposition of a strong Basque regional nobility. It also reveals a close connection between the fluctuations that characterized Calahorra's administrative fortunes north of the Ebro and the see's turbulent political context, defined by its position straddling a volatile frontier between Castile, Navarre and Aragon. Finally, it provides a useful opportunity to analyse Rodrigo Cascante's changing relationships with the secular powers that competed for the territory of his Riojan see. This analysis leads to the conclusion that the bishop of Calahorra was not a passive partner in these relationships, but actively adjusted his stance with respect to the crowns of Castile and Aragon, primarily in function of how well they did, or might, contribute to the realization of his Basque agenda.