[7] His son Pedro Manrique de Lara [es] became Duke of Nájera in 1482, a title that continues in the family down to the present day.

That arrangement of the territory of Spain remains largely in effect today,[9] although the province of Burgos is now part of Castile-León rather than the historic region of Old Castile.

[11] Inmaculada Ranedo of the PP, the mayor of Condado de Treviño, as of July 2008 leant toward at least cooperation with Álava, but she chose to let the governments at higher levels sort out the issues linked to its formal status.

During the litigation since the formation of the enclave, its population has unequivocally inclined towards the annexation of Treviño to Álava, as expressed by vote or as demanded by its municipal institutions.

In 1940, just after the start of the Francoist regime, a plebiscite in the enclave, conducted by the Civil Government of Burgos, showed 98% support for the integration of Treviño into Álava; however, that was not acted upon.

[12] The last popular vote held in the namesake municipality in 1998 supported the celebration of a referendum on the issue, but this was rejected by the Spanish government officials as invalid, "as if it did not exist".

[14] As late as 1810, a French civil servant, Eugène Coquebert de Montbret, pinpointed La Puebla as the southernmost Basque-speaking town in Álava on a map showing Basque language boundaries.