From his general description and the approximate location of their town or principal place that he called 'Devana', their territory was along the northeastern coast of Scotland and is known to have included Buchan Ness, as Ptolemy refers to the promontory as 'Taexalon Promontory' (Ταίξαλον ἄκρον).
From Ptolemy's general description and the approximate location of their main settlement, which was called 'Devana', their region was situated along Scotland's northeastern coast and included Buchan Ness, which he also referred to as 'Taexalon Promontory'.