Notable Dates in Scottish History A note on time and dates in Scotland. 80 Julius Agricola advances across the River Clyde fighting off bands of warring celts. 84 The celtic tribes unite under Calgacus, but he is killed (along with 10000 men) when he meets the Roman army at Ardoch. 296 The Pictish people were first mentioned in Roman literature. The name Pict is said to have come either from a ...