The surname names the work outright: what the hands did became what the line is called.
A surname from a trade is the most honest kind: it does not describe the person, it names the work. Smith, Baker, Cooper — not a character sketch, a job in a village that had perhaps two dozen of them.
That is why these are the commonest surnames in the world: Smith, Schmidt, Ferrari, Kovalenko are the same surname in different languages. There was a forge everywhere, and everywhere it gave a name more often than any other trade.
The reading here is simple and firm: the line did this work. What is left of it in whoever carries the name now is a question for them.
45 surnames taken apart.