The name Subola, precedent of present-day Soule and Zuberoa, is attested for the first time in 635, when a column of a Franco-Burgundian expedition led by Duke Arnebert against the Basques was defeated by them.
Subola, a former name for the area that is now part of Soule and Zuberoa, is mentioned for the first time in 635. The region's early history involved a confrontation between the Basques and a Franco-Burgundian army led by Duke Arnebert.