Roman roads in Britannia the military road from Carlisle to Corbridge, was built under the Emperor Trajan (ruled 98–117 AD) along the line of the future Hadrian's Wall, which was constructed by his successor Hadrian in 122–132 AD. Scotland ("Caledonia"), including England north of Hadrian's Wall, remained mostly outside the boundaries of "Britannia" province, as the Romans never succeeded in subjugating the entire island, despite a serious effort to do so by governor Gnaeus Julius Agricola in 82–84 AD. However, the Romans maintained a system of forts in the lowland region ca. 80–220 AD to control the indigenous population beyond Hadrian's Wall and annexed
Scotland in the Early Middle Ages Creator", attributed to St Columba) (c. 597). In Old English there is "The Dream of the Rood", from which lines are found on the Ruthwell Cross, making it the only surviving fragment of Northumbrian Old English from early Medieval Scotland. Scotland in the Early Middle Ages Scotland was divided into a series of kingdoms in the early Middle Ages, i.e. between the end of Roman authority in southern and central Britain from around 400 CE and the rise of the kingdom of Alba in 900 CE. Of these, the four most important to emerge were the Picts, the Scots of