Family name origins & meanings
- German : modern reflex of the Old High German personal name Cazo, which derives from the unexplained root kad-.
- German : from Middle High German katze ‘cat’; probably short for a more usual derivative such as Ketzel, a nickname for a cat-lover or breeder, or for someone with feline qualities, or Kätzmayr (see Katzenmeyer).
- German : nickname from Middle High German ketzer ‘heretic’, ‘free-thinker’.