This makes me laugh.
I'll explain. When my wife and I were dating she had asked me one day, "Why are all magicians white?" (I too am white as a pair of unstained Haynes, she on the other hand is straight from Africa by way of Ghana) The way she put the question to me was as if I was the reason that black magicians are far and few between, which made me laugh. I fired back with, "I am the wrong person to ask this question too, you should ask "yo bruthas"" (If this offends some of you, I'm sorry, this is how my wife and I play. We're all the same color on the inside, no sense in getting bent out of shape about trivial stuff like color of skin)
My point?! If your question is are there any, well then yes. If it is why aren't there many that are well known, who knows and does it really matter?