almost all of Castile in the 8th century, though only for a very brief period, and left little if any trace of their occupation. King Alfonso III the Great of León reconquered it about the middle of the 9th century, and built several castles for the defence of Christendom, which was then extended through the reconquest of lost territory. The region came to be known as Castile (Latin castella), i.e. "(land of) castles". Burgos was founded in 884 as an outpost of this expanding Christian frontier, when Diego Rodríguez "Porcelos", count of Castile, governed this territory with orders to promote the increase of the Christian population; with this end in view he gathered the inhabitants of the surrounding country into one fortified village. The city began to be called Caput Castellae ("Cabeza de Castilla" or "Head of Castile"). The county (condado) of Castile, subject to the Kings of León, continued to be governed by counts and was gradually extended; one of these counts, Fernán González, established his independence. In the 11th century, the city became the see of the Roman Catholic Diocese of Burgos and the capital of the Kingdom of Castile. Burgos was a major stop for pilgrims on the French Way the most popular path to Santiago de Compostela and a centre of trade between the Bay of Biscay and the south, which attracted an unusually large foreign merchant population, who became part of the city oligarchy and excluded other foreigners. Throughout the 13th and 14th centuries, Burgos was a favourite seat of the kings of León and Castile and a favoured burial site. The consejo or urban commune of Burgos was firmly in the hands of an oligarchic class of caballeros villanos, the "peasant knights" of Burgos, who provided the monarchs with a mounted contingent: in 1255 and 1266 royal charters granted relief from taxes to those citizens of Burgos who owned horses and could arm themselves, provided that they continue to live within the city walls. The merchant oligarchy succeeded the cathedral chapter as the major purchasers of land after 1250; they carried on their mercantile business in common with municipal or royal functions and sent their sons to England and Flanders to gain experience in overseas trade. A few families within the hermandades or confraternities like the Sarracín and Bonifaz succeeded in monopolising the post of alcalde, or mayor; a special court, the alcalde del