Septimus Severus died on this day, in Eboracum, Britannia, (modern York, England), in 211 AD. Under his reign the Roman Empire attained its high water mark as he extended borders in Asia, Africa and in Britain.
Had he survived for just one more year the History of Britain could have been quite different. In 210 AD Severus laid the foundations for the complete conquest of Caledonia. He repaired Hadrian’s Wall. Then he moved north and carried out extensive repair work on the Antonine Wall and secured the Scottish Lowlands between Hadrian’s Wall and the central belt from the Firth of Clyde to the Firth of Forth.
He then advanced up the east coast of Scotland, constructing forts along the way. He advanced through modern Dundee, Aberdeen and around the Firth of Moray near Inverness. The local clans refused to meet the legions and engaged in guerrilla tactics. Even so it became clear by the winter of 210 that the Clans would have to make peace with these invaders, who seemed relentless.
How different would the history of Britain have been had Caledonia been romanised? Clan structures, which endured to the rebellion of Bonny Prince Charles would have been replaced with a Roman administrative structure.
But Severus fell ill and withdrew south to Eboracum where he died. The momentum of the campaign was lost. His son, Caracalla, re-initiated the campaign, but within a short time sued for peace with the Caledonian tribes. The Romans withdrew south of Hadrian’s wall and never again ranged north in conquest.
It would be nice, from a Celtic perspective, to depict this as a victory of Celtic passion over Roman organisation. The truth though is that the Celts had the sense to steer clear of the legions. They saw what happened in Britain. So they withdrew to the mountains, woods and bogs. They left the Romans to fight the cold, the wet, the relentless damp, the plagues of midges that rise on any sunny day. Against these enemies the Romans had no defence.