I've found a photograph of a C. S. Williams by Maull & Fox in 1875. Do their complete records exist anywhere? I'm trying to establish for certain whether this is Dr. Clement Williams.

 I am a freelance author in Toronto, Canada, currently working on a biography of Dr. Clement Williams, an army surgeon, British agent, and trader in Mandalay, Burma, from 1861 to 1879. A few years ago the Royal Ontario Museum received 2 donations of…