Bardulia

According to some sources, Bardulia is the ancient name of the territories that composed the primitive Castile in the north of what later became the province of Burgos. The name comes from Varduli, the name of a tribe who, in pre-Roman and Roman times, populated the eastern part of the Cantabrian coast of the Iberian peninsula, primarily in present-day Guipúzcoa. Some assert that the Varduil also encompassed or assimilated the Caristii and Autrigones.