c.84: Romans defeat the Caledonians at the Battle of Mons Graupius.
2nd century: Roman forts were built and occupied at Cramond and Inveresk on the outskirts of present day Edinburgh.
c.143: Romans construct the Antonine Wall.
Antonine Wall at Twechar
c.163: Romans withdraw south to Trimontium and Hadrian's Wall.
c.300: The term Pict is first recorded in describing the federated tribes invaded by Constantius Chlorus.
c. 368: The Pict, Scot and Saxon tribes attack the Romans in London and plunder their treasures.
c. 397: Saint Ninian establishes a Christian mission at Whithorn.
c. 470: Votadini peoples form the kingdom of Gododdin in the region north of the River Tweed.