George Calvert Holland
Dr George Calvert Holland, M.D. (1801–1865) was born at Pitsmoor, Sheffield.
See here for an overview of Holland's life and work.[1].
See also the Wikipedia entry.
See here for links to a large number of Holland's written works.
As an example of his detailed investigations into the evils of industrial conditions, he highlights the trade of the fork grinder in Sheffield as 'perhaps more destructive to human life than any pursuit in the united empire [2]