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Kingdom of Alt Clut

Kingdom of Strathclyde
Teyrnas Ystrad Clut
450 AD–1093 AD
The core of Strathclyde is the strath of the River Clyde. The major sites associated with the kingdom are shown, as is the marker Clach nam Breatann (English: Rock of the Britons), the probable northern extent of the kingdom at an early time. Other areas were added to or subtracted from the
Capital Dumbarton and Govan
Languages Cumbric
Government Monarchy
Historical era Middle Ages
 •  Established 450 AD
 •  Incorporated into the Kingdom of Scotland 1093 AD
Preceded by
Succeeded by
Sub-Roman Britain
Kingdom of Scotland
Today part of  United Kingdom
  Dumfries and Galloway
  East Ayrshire
  South Ayrshire
  South Lanarkshire
  North Lanarkshire
  East Renfrewshire
  Renfrewshire
  City of Glasgow
  Inverclyde
  East Dunbartonshire
  West Dunbartonshire
  Argyll and Bute
  Stirling

Strathclyde (lit. "Strath of the River Clyde"), originally Cumbric: Ystrad Clud or Alclud (and Strath-Clota in Anglo-Saxon), was one of the early medieval kingdoms of the Britons in Hen Ogledd ("the Old North"), the Brythonic-speaking parts of what is now southern Scotland and northern England. The kingdom developed during the post-Roman period. It is also known as Alt Clut, a Brittonic term for Dumbarton Castle, the medieval capital of the region. It may have had its origins with the Brythonic Damnonii people of Ptolemy's Geography.

The language of Strathclyde, and that of the Britons in surrounding areas under non-native rulership, is known as Cumbric, a dialect or language closely related to Old Welsh, and in modern terms to Welsh, Cornish and Breton. Scottish toponymy and archaeology points to some later settlement by Vikings or Norse–Gaels (see Scandinavian Scotland), although to a lesser degree than in neighbouring Galloway. A small number of Anglian place-names show some limited settlement by Anglo-Saxon incomers from Northumbria prior to the Norse settlement. Owing to the series of language changes in the area, it is not possible to say whether any Goidelic settlement took place before Gaelic was introduced in the High Middle Ages during the 11th century.


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