Judging by the coins found by the excavators, the line was abandoned about 190, and the forts were wrecked and dismantled, perhaps by the retreating Romans.
After the retreat from the Antonine Vallum, about 190, we hear of the vigorous "unrest" of the Meatae and Caledonians; the latter people are said, on very poor authority, to have been little better than savages.
Against them Severus (208) made an expedition indefinitely far to the north, but the enemy shunned a general engagement, cut off small detachments, and caused the Romans terrible losses in this march to a non- existent Moscow.
Not till 306 do we hear of the Picts, about whom there is infinite learning but little knowledge.

They must have spoken Gaelic by Severus's time (208), whatever their original language; and were long recognised in Galloway, where the hill and river names are Gaelic.
The later years of the Romans, who abandoned Britain in 410, were perturbed by attacks of the Scoti (Scots) from Ireland, and it is to a settlement in Argyll of "Dalriadic" Scots from Ireland about 500 A.D.
that our country owes the name of Scotland.
Rome has left traces of her presence on Scottish soil--vestiges of the forts and vallum wall between the firths; a station rich in antiquities under the Eildons at Newstead; another, Ardoch, near Sheriffmuir; a third near Solway Moss (Birrenswark); and others less extensive, with some roads extending towards the Moray Firth; and a villa at Musselburgh, found in the reign of James VI.

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