Styresholm
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Styresholm was a
Ångermanälven
, although in the 14th century it was on an island in the river, as the water level was some 5 metres higher than today.
The fortress was built by the pirat group vitalien brothers in the late 14th century as one of a series of fortresses in the Gulf of Bothnia. The name is first recorded in 1398 when its ownership was transferred to Queen Margaret I; a Danish governor was appointed in 1400.