Indeed today's Alsenz, congratulations, Rainer, I was completely on the wrong track there. As for the M, i had entertained that possibility, too, but thought comparing to the different "M" in Maria that it differed too much.
But you're correct, it is an M, I found the marriage record in Alsenz:
http://www.archion.de/p/1c0ea6d2d9/
But it seems that he was not born there, as the family is not present in the index at the end of the church book and the marriage record indicates that his father, if I read this correctly, a "Bürger und Waffenschmied zu" , but then I have difficulties making sense of the place name,
here a zoomed-in version, if somebody else might give it a try,
http://www.archion.de/p/922e590a4c/ ?
Regards,
Jérôme