Originally Posted By: etaoin
I think it's Severus Snape.

So did I! That's what I captioned it with on my dating photos page for 1840-1860 - Dating Photos 1840s-1860

Originally Posted By: Zed
is it a relative?

Sadly I don't have any daguerreotypes of relatives. I have no idea who it is. I bought him on ebay (where else?). The oldest photos of relatives I have only go back to the 1860s and are collodion prints on paper.