"Joseph Austen Treffry (1782 \u2013 29 January 1850) was an engineer, mining adventurer, and industrialist who became a significant landowner in Cornwall, England."@en . . "1782Z"^^ . . "1850Z"^^ . "Joseph Austen Treffry"@en . "1850-01-29Z"^^ . . . . "Sheriff of Cornwall, landowner" . . . . "Asuten, Joseph"@en . "Treffry, Joseph"@en . . .