In the latter part of the third century we found the Highlanders spoken of under a new name, _Picti_, which the Roman historians at least, undoubtedly understood to be the Latin word meaning ‘painted,’[34] and which all the best modern writers believe to have been imposed by the Romans themselves, from the fact that the indomitable Caledonians had retained the custom of self-painting after all the Romanized Britons had given it up. There is the strongest probability that the Caledonians spoken of as Picts by Eumenius were the same as the Caledonians of Tacitus, or that the Caledonians and Picts were the same people under different names. The immediate cause for this change of name we have no means of ascertaining. It is in every way improbable that the Picts were a new people, who had come in upon the Caledonians, and supplanted them some time after Agricola’s invasion. The Romans were constantly coming into contact with the Caledonians from the time of Agricola till they abandoned Britain entirely, and had such a supplantation taken place, it certainly could not have been done quietly, and without the cognizance of the Romans. But we find no mention in any contemporary historian of any such commotion, and we know that the inhabitants of the Highlands never ceased to harass the British provincials, showing that they were not much taken up with any internal disturbance. Indeed, writers who adopt the most diverse opinions on other points in connection with the Pictish question are all agreed as to this, that the Caledonians and Picts were the same people.[35] We learn further from our authorities, that towards the end of the fourth century the inhabitants of Caledonia were known to the Romans under the names of Dicaledones and Vecturiones, it being conjectured that these correspond to the Caledonians and Mæats of Dio, and the Northern and Southern Picts of a later period. The connection of the latter part of the word Di-caledones with _Caledonii_ is evident, although the significance of the first syllable is doubtful,--some authorities conjecturing that it is the Gaelic word _du_, meaning “genuine.” It appears at all events to be established that during the early history of the Highlands, whatever other divisions may have existed among the inhabitants, those dwelling to the north and those dwelling to the south of the Grampians were two separate confederacies, and were known by distinct names.