With the final defeat of Gwynedd, Edward set about consolidating his rule in Wales. "Criccieth Castle" was extended and reshaped, becoming one of a ring of castles surrounding Edward's newly conquered territories. A township developed to support the garrison and a charter was granted in 1284; the charter was intended to create a plantation of English burgesses who would provide food for the soldiers from the arable land behind the "Dinas" and the grazings on the slopes beyond. Weekly markets were held on Thursdays and there were annual fairs on 25 April and 18 October, the evangelical feasts of Saint Mark and Saint Luke.