Two entries with the name Black Mountain.

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Black Mountain

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A Scottish mountain, also called Nouquestran, where Arthur’s Sir Fergus defeated the Black Knight winning a magic horn and wimple.

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Source
Fergus | Guillaume le Clerc, 1200-1233

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Black Mountain

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In Toylet, the home of a doctor who healed Tyolet after he had been injured in a battle against lions.

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Source
Toylet | Late 12th century

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