Wall of Severus as the mid-5th century predating the 8th-century reign of the Saxon King Offa of Mercia by 300 years. Septimius Severus arrived in Caledonia in 208 after Picts began making a series of attacks and incursions since 197. During these military operations in Scotland, the Wall of Severus was reportedly built. Cassius Dio, a Roman historian who lived at the time of Severus, makes no direct mention to any new fortification but does allude to the existing Antonine and Hadrian Walls. Late Roman historians interchange the name Severan Wall with the Antonine Wall. Other historical writers like Bede - an 8th-century
Scotland during the Roman Empire Ken MacLeod, "Warriors of Alavna" by N. M. Browne, and in the feature films "The Last Legion", "Centurion" and "The Eagle". Scotland during the Roman Empire Scotland during the Roman Empire refers to the protohistorical period during which the Roman Empire interacted with the area that is now Scotland, which was known to them as "Caledonia". Roman legions arrived around 71, having conquered the Celtic tribes of "Britain" (England and Wales) over the preceding three decades. Aiming to annex all of the island of "Albion", Romans under Q. Petilius Cerialis and Gn. Julius Agricola invaded the Caledonians in the 70s