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
Antonine Wall and the wall was never fortified again. Most of the wall and its associated fortifications have been destroyed over time, but some remains are visible. Many of these have come under the care of Historic Scotland and the UNESCO World Heritage Committee. Roman Emperor Antoninus Pius ordered the construction of the Antonine Wall around 142. Quintus Lollius Urbicus, governor of Roman Britain at the time, initially supervised the effort, which took about twelve years to complete. The wall stretches from Old Kilpatrick in West Dunbartonshire on the Firth of Clyde to Carriden near Bo'ness on the Firth of Forth. The