The Kingdom of Strathclyde

Long before Scotland existed, the valley of the Clyde was ruled by a kingdom of its own — a realm of the Britons, speaking a language close to Welsh, that endured for some six hundred years between the fall of Rome and the rise of Scotland. Its great fortress was the towering Rock of Dumbarton; its later heart lay at Govan, now part of Glasgow; and somewhere within its bounds, in the sixth century, the little religious settlement that would become Glasgow was founded. To understand Glasgow’s beginnings is to understand the long-lost kingdom of Strathclyde.

This page tells its story: the Britons who ruled here, their fortress on the Clyde, their most famous king, their language, the great siege that broke them, their new centre at Govan, and the kingdom’s slow absorption into Scotland.

The Britons of the north

When the Romans withdrew from Britain in the fifth century, the lands they left behind broke into a patchwork of small kingdoms. In the south-west of what is now Scotland, the local Britons — descendants of the tribes who had lived here in Roman times — formed one of the most enduring of these realms. They belonged to the world of the Hen Ogledd, the ‘Old North’, a group of British kingdoms stretching across southern Scotland and northern England, and they held tenaciously to their language and identity even as Angles, Scots and, later, Norsemen pressed in around them. Their kingdom, centred on the Clyde, would outlast almost all the others.

The Rock of the Clyde

The heart of the kingdom was one of the most striking natural fortresses in Britain: Dumbarton Rock, a great twin-peaked crag of volcanic stone rising sheer from the north bank of the Clyde. The Britons called it Alt Clut, ‘the Rock of the Clyde’, and gave the same name to their kingdom in its earlier centuries. From this all-but-impregnable stronghold their kings ruled the surrounding country, guarding the river and the routes inland. So closely was the kingdom identified with the Rock that for hundreds of years Alt Clut and its rulers were one and the same — a line of British kings holding the gateway to the western Highlands from their fortress above the water.

Rhydderch & St Mungo

The most celebrated of these kings was Rhydderch Hael — Rhydderch ‘the Generous’ — who ruled around the year 600 and became one of the great figures of the Old North, remembered in Welsh legend long afterwards. Rhydderch is important to Glasgow above all for his part in its founding story: it was under his protection, tradition says, that St Mungo established his church by the Molendinar Burn and became the first bishop of the Christian community on the Clyde. The kingdom of this period could hold its own by force as well as faith; in 642 its warriors defeated the Scots of Dal Riata at the battle of Strathcarron, killing their king. This was Strathclyde at the height of its power.

A British-speaking realm

The people of this kingdom were not Gaels or Angles but Britons, and they spoke Cumbric — a Brittonic language closely related to Old Welsh, and quite distinct from the Gaelic spoken by the Scots to the north and west. That shared tongue bound them culturally to the Welsh kingdoms far to the south, and traces of it survive in place-names across the Glasgow region to this day. At its greatest extent the kingdom reached from around Loch Lomond in the north deep into what is now Cumbria in the south — a wide British realm along the western seaboard, and the last major stronghold of the old British language and culture in the north.

The great siege

Disaster struck in the year 870. A great Viking army from the Norse kingdom of Dublin, led by two kings remembered as Olaf and Ivar, sailed up the Clyde and laid siege to Dumbarton Rock. The siege lasted four months — an extraordinary length of time — and ended only when the defenders, cut off on their crag, ran out of water. When the fortress fell, its wealth was plundered, and many of its people were carried off into slavery in Dublin. It was the gravest blow the kingdom had ever suffered: the ancient fortress of Alt Clut, which had guarded the Clyde for centuries, was broken, and with it the old order of the British kingdom.

The move to Govan

Yet the kingdom did not die. In the years after the siege its centre shifted upriver, away from the ruined Rock, to the district of Govan — today part of Glasgow, on the south bank of the Clyde — which became its new royal and religious heart. It is from this later period that the kingdom’s most remarkable surviving monuments come: the Govan Stones, a superb collection of early medieval carved stones, among them a great stone sarcophagus and a group of the massive house-shaped tombstones known as hogbacks, still preserved in the old parish church at Govan. Renewed and increasingly known as Cumbria, the kingdom even enjoyed a revival in the tenth century, its power reaching once more far to the south.

The end of the kingdom

The end came gradually. Through the tenth and eleventh centuries the growing Scottish kingdom of Alba pressed ever harder on Strathclyde, until at last, in the eleventh century, the British kingdom was absorbed into what was becoming the kingdom of Scotland. For a while it kept its own laws and its Cumbric speech as a distinct province, and one of its rulers, styled Prince of the Cumbrians, went on to become King David I of Scotland. But its separate existence was over. When the Scottish kings and their bishops later raised the great cathedral over St Mungo’s tomb, they built upon the memory of the vanished British kingdom in which Glasgow had first been born.

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