Seems Fritzi’s come a long way. Forgot who, but wanted to thank whoever gave info on that link to old Nancy strips.
It seems Fritzi was originally a rich girl, and thus the last name of Ritz. And Nancy was a niece also with the last name of Ritz.
It seems the strip originally was called Fritzi Ritz and some time after Nancy came along she became so popular the strip was retitled
Fritzi was also a flapper much like Blondie, except that Blondie was a person of very modest means.