Human history on the Clyde begins when the ice ends. As the last glaciation released Scotland around ten thousand years ago, the land itself rebounded and the sea advanced and retreated, leaving raised beaches well above today’s shore — central Glasgow largely stands on them. Along that changing estuary came the first people: small mobile bands of hunter-gatherers, working the rivers and shorelines for fish, shellfish, birds and game. They left little but scatters of worked flint, found at spots around the Clyde valley, but they were here millennia before anything that could be called a settlement.
Farming arrived with the Neolithic, from around 4000 BC, and with it the first permanent marks on the land: cleared ground, monuments and burials. Bronze Age people (from roughly 2000 BC) left more — burial cists and urns have turned up across what is now the city, at times startling Victorian builders who found ancient Glaswegians beneath new streets.
The most evocative prehistoric finds came out of the river itself. As the Clyde was deepened and its harbour dug out in the nineteenth century, workmen recovered a remarkable series of ancient dugout canoes — log boats, some found high and dry under the streets near Glasgow Green and Springfield, stranded on the buried shorelines of a river that once ran wider and shallower. They are direct, physical proof of people living and travelling on the Clyde thousands of years before recorded history, and examples survive in the city’s museum collections.
By the Iron Age the Clyde valley belonged to a Celtic, Brittonic-speaking people whom the Greek geographer Ptolemy, writing in the second century AD, records as the Damnonii. They farmed, herded and fortified: small defended homesteads and duns dotted the region, with hillforts on commanding ground around the valley, and crannogs — dwellings built out over the water — on lochs and along the estuary shores.
It was the Damnonii’s country that the Roman army marched into in the late first century AD — the moment this corner of the world steps, just barely, into written history. What the legions found was not empty land but a settled, organised Iron Age society; what happened between them is the subject of the next page.