Here is my try at a Victorian Old West style photo.

Usually there is some grain and sepia toning in those:

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Mike "ex-genius" Kelley

At the risk of sounding rude (not my intention) it still has the "stink" of computer generated images, aka the uncanny valley. As Kellytoons pointed out, viewers get the vibe better from sepia tones and distressed patina. Don't be afraid to go rough processing the image; things like out of focus spots, speckles, water damage, tears or creases, blown out lights or darks.

Animating now to life itself --Walt Whitman 

Good start...and remember most people from that period were "posed" pretty stiff and rigid as well.
The photographers also employed a "neck-brace" device from time to time  to keep people from moving during the camera's long shutter exposure time.



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When I posted those renderings, I knew they were incomplete. While I was working on the project, I googled Mathew Brady and knew there was more detail I had to do.
It was about 4 AM Pacific time and I was tired. Here is a rendering of the man character. One in sepia and and added noise, and the other in BW with added noise.
I applied 40 noise to the photo, but it looked unrealistic. So, I used 17 and 26 amount of noise. I also am adding some old photos from Smithsonian, Time and Creative
Commons Wikipedia. The Time photo is a colorized photo of Lincoln, originally taken by Matthew Brady.  I made my own gray background, using the fog particle
and rendering a photo of it to use in 2D Background folder. 
 

That guy looks a lot like captain Picard.
Probably unintentional, but you perfectly caught Patrick Steward's grin with morphs.