Just came across this site randomly. My maternal line was named Matz, and are believed to be from the Alsace / Lorraine region between France and Germany. The farthest I can go back was Jonas and Sofie Matz, who were my great, great grandparents.They must have left in the second half of the 1800's, were Jewish, and settled in NYC.
I always wondered if the name could be a derivative of the town of Metz. Just a lark, but if this rings a bell with anyone, I'd be curiuos. Thanks