I can't say WHO this might be, I believe it is just a "North African Man", but it's worth looking into the Artist, Henry Mosler... He was born in the 1840's in Poland, emigrated to New York in his early life and died sometime in the 1920's. His son is also an artist, Gustave Henry Mosler. Great artwork....particularly the work centered around the civil war period when he was in his early twenties... His artwork covers a great deal of topics and people, ranging from every day life to images of people from far away locations... If this is an original work, value can range $300-$600 or more. In fact, I found this link which seems to be rather similar to this one, except for a few differences, such as the signature location and a supposed name for the piece?!?
Good luck with it!