Scottish Gaelic: Dùn Èideann
Castellum Puellarum, Eidyn, Tenebroc

A city in the Lothian region of Scotland, now the capital. In Roman times, it was called Castellum Puellarum, leading to an identification with the Castle of Maidens. John Major, the Scottish chronicler, thought that Edinburgh was Arthur’s capital.

The city appears in French romance as Tenebroc. It may be indicated by Agned in Nennius.

It is also the site of Arthur’s Seat, a volcanic plug where Arthur was alleged to have watched his forces defeat the Picts and Scots.