De Lank Quarries have a Wikipedia page but Hugh Shearer and Co. are more mysterious. Probably the firm that owned the quarry at the time and/or carved the monument.
2025: Mr Little confirmed our theory: The Architect Vol. 27, 1882 carried adverts promoting "Messrs Hugh Shearer and Co., the Eddystone Granite Quarries De Lank, Cornwall. Head Office: 21 Great George St. Westminster SW".
Credit for this entry to: Alan Patient of www.plaquesoflondon.co.uk
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