 The name of the Caledonians may be found in toponymy, such as "Dùn Chailleann", the Scottish Gaelic word for the town of Dunkeld meaning "fort of the Caledonii", and possibly in that of the mountain "Sìdh Chailleann", the "fairy hill of the Caledonians".According to "Historia Brittonum" the site of the seventh battle of the mythical Arthur was a forest in what is now Scotland, called "Coit Celidon" in early Welsh.The etymology is probably from a P-Celtic source.