Roman penetration
Gnaeus Julius Agricola, the Roman governor of Britain from ad 77 to 84, was the first Roman general to operate extensively in Scotland. He defeated the native population at Mons Graupius, possibly in Banffshire, probably in ad 84. In the following year he was recalled, and his policy of containing the hostile tribes within the Highland zone, which he had marked by building a legionary fortress at Inchtuthil in Strathmore, was not continued. His tactics were logical if Scotland was to be subdued but probably required the commitment of more troops than the overall strategy of the Roman Empire could afford. The only other period in which a forward policy was attempted was between about 144 and about 190, when a turf wall, the Antonine Wall (named for the emperor Antoninus Pius), was manned between the Forth and the Clyde.
The still-impressive stone structure known as Hadrian’s Wall had been built between the Tyne and Solway Firth between 122 and 128, and it was to be the permanent northern frontier of Roman Britain. After a northern uprising, the emperor Severus supervised the restoring of the Hadrianic line from 209 to 211, and thereafter southeastern Scotland seems to have enjoyed almost a century of peace. In the 4th century there were successive raids from north of the wall and periodic withdrawals of Roman troops to continental Europe. Despite increasing use of native buffer states in front of the wall, the Romans found their frontier indefensible by the end of the 4th century.
At Housesteads, at about the midpoint of Hadrian’s Wall, archaeologists have uncovered a market where northern natives exchanged cattle and hides for Roman products; in this way some Roman wares, and possibly more general cultural influences, found their way north, but the scale of this commerce was probably small. Roman civilization, typified by the towns and villas, or country houses, of southern Britain, was unknown in Scotland, which as a whole was never dominated by the Romans or even strongly influenced by them.
From about ad 400 there was a long period for which written evidence is scanty. Four peoples—the Picts, the Scots, the Britons, and the Angles—were eventually to merge and thus form the kingdom of Scots.
The Picts occupied Scotland north of the Forth. Their identity has been much debated, but they possessed a distinctive culture, seen particularly in their carved symbol stones. Their original language, presumably non-Indo-European, has disappeared; some Picts probably spoke a Brythonic Celtic language. Pictish unity may have been impaired by their apparent tradition of matrilineal succession to the throne.
The Scots, from Dalriada in northern Ireland, colonized the Argyll area, probably in the late 5th century. Their continuing connection with Ireland was a source of strength to them, and Scottish and Irish Gaelic (Goidelic Celtic languages) did not become distinct from each other until the late Middle Ages. Scottish Dalriada soon extended its cultural as well as its military sway east and south, though one of its greatest kings, Aidan, was defeated by the Angles in 603 at Degsastan near the later Scottish border.
The Britons, speaking a Brythonic Celtic language, colonized Scotland from farther south, probably from the 1st century bc onward. They lost control of southeastern Scotland to the Angles in the early 7th century ad. The British heroic poem Gododdin describes a stage in this process. The British kingdom of Strathclyde in southwestern Scotland remained, with its capital at Dumbarton.
The Angles were Teutonic-speaking invaders from across the North Sea. Settling from the 5th century, they had by the early 7th century created the kingdom of Northumbria, stretching from the Humber to the Forth. A decisive check to their northward advance was administered in 685 by the Picts at the Battle of Nechtansmere in Angus.