Anteiglesia de la Merindad de Uribe, occupied the seat number 39 in the Juntas Generales de Guernica. Until 1876 the Church of Arrigorriaga had great importance in the region, taking on account inside it the municipalities of Arrancudiaga, Basauri, Zarátamo and Alonsótegi. By this year, with the abolition of the jurisdictions and after diverse lawsuits, ended up disengaging. Alonsótegi self constituted as an independent church in the 16th century. Basauri separated from Arrigorriaga in 1510 or, at least, that is the date taken as the most official one, when the parish of San Miguel Arcángel was built, because there does not exist any document to verify that a meeting between two localities' mayors took place that day. Since then, the community was denominated as church of San Miguel of Basauri. The independence of Basauri was unilateral; it didn't have the approval of Arrigorriaga and neither had the permission of the General Juntas of Guernica to take their corresponding seat in them, they didn't manage to achieve it until 1858.