Ernstbach

Ernstbach is a German surname. It is typically of toponymic origin, meaning it derives from a place name. The name likely originates from a small settlement, farm, or geographic feature named "Ernstbach," which would translate roughly to "Ernest's stream" or "Earnest stream." The "Bach" component signifies a small stream or brook in German.

Surnames like Ernstbach became common in German-speaking regions during the medieval period as populations grew and people began to be identified not only by their given name but also by their occupation, origin, or other distinguishing characteristics.