Although the court at Celliwig is the most prominent in remaining early Welsh manuscripts, the various versions of the Welsh Triads agree in giving Arthur multiple courts, one in each of the areas inhabited by the Celtic Britons: Cornwall, Wales and the Hen Ogledd. This perhaps reflects the influence of widespread oral traditions common by 800 which are recorded in various place names and features such as Arthur's Seat, indicating Arthur was a hero known and associated with many locations across Brittonic areas of Britain as well as Brittany. Even at this stage Arthur could not be tied to one location. Many other places are listed as a location where Arthur holds court in the later romances, Carlisle and London perhaps being the most prominent.