Kingdom of Strathclyde

Strathclyde (Welsh: Ystrad Clud, 'Valley of the Clyde'), also known as Cumbria, was a Brittonic kingdom in northern Britain during the Middle Ages. It comprised parts of what is now southern Scotland and North West England, a region the Welsh tribes referred to as Yr Hen Ogledd ('the Old North'). At its greatest extent in the 10th century, it stretched from Loch Lomond in the north to the River Eamont at Penrith in the south. Strathclyde seems to have been annexed by the Goidelic-speaking Kingdom of Alba in the 11th century, becoming part of the emerging Kingdom of Scotland.