Gerstenzang
Gerstenzang is a surname of German origin. The name is believed to be a compound word derived from "Gerste" meaning barley and "Zang" which can refer to tongs or a pair of pincers. Therefore, the literal translation could suggest someone who worked with barley using tools, or perhaps a descriptor related to the handling of barley.
Like many surnames, Gerstenzang likely originated as an occupational or descriptive moniker. It is relatively uncommon