Although it is difficult, if not impossible, to ascertain the actual dates of when the variety was started, Harry Shaffer was instrumental in the development, as was Michael Muenks. I don't think any of them, alone, or single-handedly, created the variety. I know that there was considerable cooperation between John Blehm and Michael Muenks, not sure about Harry Shaffer.
Ah, ok! Thank you for that clarification, Susan!