Islands of the Clyde in the context of "Great Cumbrae"

The Kingdom of the Isles, also known as Sodor, was a Norse–Gaelic kingdom comprising the Isle of Man, the Hebrides and the islands of the Clyde from the 9th to the 13th centuries. The islands were known in Old Norse as the Suðreyjar, or "Southern Isles" as distinct from the Norðreyjar or Northern Isles of Orkney and Shetland. In Scottish Gaelic, the kingdom is known as Rìoghachd nan Eilean. The territory is sometimes called the Kingdom of Mann and the Isles, although only some of the later rulers claimed that title. The historical record is incomplete, and the kingdom was not a continuous entity throughout the entire period. At times the rulers were independent of external control, although for much of the period they had overlords in Norway, Ireland, England, Scotland or Orkney. At times there also appear to have been competing claims for all or parts of the territory. The islands have a total land area of over 8,300 square kilometres (3,205 sq mi) and extend for more than 500 kilometres (310 mi) from north to south.

Viking influence in the area began in the late 8th century, and whilst there is no doubt that the Uí Ímair dynasty played a prominent role in this early period, the records for the dates and details of the rulers are speculative until the mid-10th century. Hostility between the Kings of the Isles and the rulers of Ireland, and intervention by the crown of Norway (either directly or through their vassal the Earl of Orkney) were recurring themes.

Strathclyde (Ystrad Clud in Welsh; Srath Chluaidh [s̪t̪ɾa ˈxl̪ˠɯi] in Gaelic, meaning 'strath [valley] of the River Clyde') was one of nine former local government regions of Scotland created in 1975 by the Local Government (Scotland) Act 1973 and abolished in 1996 by the Local Government etc. (Scotland) Act 1994. The Strathclyde region had 19 districts. The region was named after the early medieval Kingdom of Strathclyde centred on Govan, but covered a broader geographic area than its namesake by including Argyll and various Western islands in addition to its Southwestern core.