The article combines 2 Castles which are in different parts of the town

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The Medieval Ormlie Castle on Brown hill of which nothing remains

https://canmore.org.uk/site/8429/thurso-princes-street-castlegreen-manse-castle-of-ormlie

and the ruinous Thurso East which is built on the other side of the river from the old town

https://canmore.org.uk/site/8504/thurso-castle


The info about each has been mixed together