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Europe · High and late Middle Ages

Kingdom of the Isles

drawn on the map 1085–1176

The Kingdom of the Isles (Norse Suðreyjar, "Southern Isles," Latinised as Sodor) was the Norse-Gaelic realm of the Isle of Man, the Hebrides and the islands of the Clyde, existing from the 9th to the 13th centuries (formed c. 849; the Crovan dynasty's kingdom conventionally dated 1079–1266).

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Shown on the map
1085–1176
Peak area
15k km²
Region
Europe

Names and extent

The Kingdom of the Isles (Norse Suðreyjar, "Southern Isles," Latinised as Sodor) was the Norse-Gaelic realm of the Isle of Man, the Hebrides and the islands of the Clyde, existing from the 9th to the 13th centuries (formed c. 849; the Crovan dynasty's kingdom conventionally dated 1079–1266).

Rulers

The dynasty's founder was Godred Crovan (r. 1079–1095), who seized Man from other Vikings (winning at last near Ramsey). Invasion by Magnus Barelegs of Norway in the 1090s brought a brief spell of direct Norwegian rule, after which Godred's descendants (the Crovan dynasty) reasserted control. The rise of Somerled — who defeated Godred Olafsson off Islay (1156) and then took Man (1158) — split the kingdom; on Somerled's death at the Battle of Renfrew (1164) it fragmented, his sons keeping the southern Hebrides while the Crovan line held Man and the northern isles.

End

After Norway's inconclusive campaign at the Battle of Largs (1263) and the death of Haakon IV, his son Magnus the Lawmender ceded the Isles and Man to Scotland by the Treaty of Perth (2 July 1266). Most of the territory continued as the Scottish Lordship of the Isles and the ecclesiastical Diocese of the Isles (Sodor and Man).

Common questions

What was the Kingdom of the Isles?
The Kingdom of the Isles (Norse Suðreyjar, "Southern Isles," Latinised as Sodor) was the Norse-Gaelic realm of the Isle of Man, the Hebrides and the islands of the Clyde, existing from the 9th to the 13th centuries (formed c. 849; the Crovan dynasty's kingdom conventionally dated 1079–1266).
When is the Kingdom of the Isles shown on the map?
The border data draws the Kingdom of the Isles 1085–1176. The source samples borders at fixed dates, so a span can begin late or run on past the end.
How large was the Kingdom of the Isles?
At its greatest extent drawn on this map, the Kingdom of the Isles covered about 15,000 km². That is the largest area the border data gives it across the years it is drawn, not necessarily its greatest extent in history.
Who ruled the Kingdom of the Isles?
The dynasty's founder was Godred Crovan (r. 1079–1095), who seized Man from other Vikings (winning at last near Ramsey). Invasion by Magnus Barelegs of Norway in the 1090s brought a brief spell of direct Norwegian rule, after which Godred's descendants (the Crovan dynasty) reasserted control.

Sources

This compendium cites its sources once for the whole document rather than per territory. Its bibliography names the English Wikipedia articles for each kingdom as the primary basis, with Encyclopædia Britannica, the World History Encyclopedia, national heritage bodies (Historic Environment Wales and Scotland, the Clwyd-Powys Archaeological Trust), museum sources and the Dictionary of Irish Biography, read against the Anglo-Saxon Chronicle, Bede and the Irish annals with their own biases. The article this entry is anchored on:

This entry was last updated .

This entry was researched and drafted with AI from the sources above, and has not been reviewed by a historian. How entries are made

Text available under CC BY-SA 4.0: reuse it with a credit to The World Through Time and a link to this page. Passages drawing on the Wikipedia articles listed above are also licensed CC BY-SA 4.0 by their contributors.

Border geometry for the map itself comes from Cliopatria v0.12 (Seshat Global History Databank, CC-BY-4.0).

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