The Brigantes were a Celtic tribe who in pre-Roman times controlled the largest section of what would become Northern England. Their territory, often referred to as Brigantia was centred in what was later known as Yorkshire. The Greek geographer Ptolemy named the Brigantes as a tribe in Ireland also, where they could be found around Wexford, Kilkenny and Waterford while another probably Celtic tribe named Brigantii is mentioned by Strabo as a sub-tribe of the Vindelici in the region of the Alps.