I met a guy, Jason BreMiller, white, from the Midwest. He sazs he is German and so is his name. - This may be true for the second part, but I wonder what the original surname might have been and why the M was capitalized at one point. I have never seen anything like this in Germany.
A quick Google search shows, that this spelling seems to be quite common.
Any ideas, what other language may be involved?