Siege

Siege of Dumbarton

870 · 55.94° N, 4.56° W

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What the records say

When
870
Kind
Siege
Coordinates
55.94° N, 4.56° W
Description
870 siege of Dumbarton by Vikings

Siege of Dumbarton

870 siege of Dumbarton by Vikings

The siege of Dumbarton was a successful four-month siege of the Brittonic fortress at Dumbarton Rock in 870, initiated by the Viking leaders Amlaíb, King of Dublin, and Ímar. Dumbarton was capital of the Kingdom of Alt Clut, the only surviving Brittonic kingdom outside of Wales. It represented a valuable target for the Viking invaders, who were likely motivated by strategic considerations, as well as loot.

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