Wolfgang Köpfel should not be confused with Wolfgang Koepfel.
Wolf['''gang'''] Köpfel (also Köpffel, Köpphel, Cephal[a]eus;) was a Strasbourg printer in the period of the early Reformation. He printed, for instance, works by Martin Luther, which amounted to around a third of his publications, and Matthäus Zell.[1] [2]