history of the Haro Wine Festival dates back to the 12thcentury to a land dispute between the people of Haro and the neighboring village, Miranda del Ebro. King Ferdinand III of Castile would finally resolve the issue in 1237 via an executive letter which would later serve Judge Sancho Martínez de Leiva as a legal basis for establishing the legal boundaries between the neighbors. The judge also ordered that Haro town officials mark their property lines with the town’s purple banners every year on Saint Peter’s Day as well as the first Sunday of each September. If this task was not completed, the land would then belong to Miranda del Ebro. To complete this task, a procession to the Bilibio cliffs was organized on ever 29th of June.