Ceredigion sources of income. Ceredigion's population at the 2011 UK census was 75,900. Its largest town, Aberystwyth, is one of its two administrative centres, the other being Aberaeron. Aberystwyth houses Aberystwyth University, Bronglais Hospital and the National Library of Wales. Lampeter is home to part of the University of Wales Trinity Saint David. Ceredigion has been inhabited since prehistoric times. A total of 170 hill forts and enclosures have been identified across the county and there are many standing stones dating back to the Bronze Age. Around the time of the Roman invasion of Britain, the area was between the realms
Kingdom of Ceredigion a part of southern Ceredigion was in the territory of the Demetae and possibly part of that of the Ordovices. In post-Roman times, however, there is no evidence that the Kingdom of Dyfed included any part of Ceredigion. Modern Ceredigion corresponds almost exactly to the ancient kingdom of Ceredigion. This name is derived from an adjective Cereticianus, itself a derivative of the proper name Cereticus (Cere- dig), known as the son of Cunedda. Though modern Ceredigion corresponds very closely to the old kingdom of Ceredigion, yet it would appear that, in the thirteenth and fourteenth centuries, certain places in Carmarthenshire,