Rhymes With "Have On"

Singing Group from Early 40s

Last night at the Commencement Concert, and last week at the Reunion Concert, the boys sang a song - I do not have the title - that had been popular with the Avon Heirs, which was the singing group in the 50s and 60s.  The song sounds very much like a traditional "fight song," but "Avon" is pronounced in the Founder's Era way, which is to say it rhymes with "have on."  This leads to the question: when did Avonians begin to pronounce "Avon" as we now do (rhymes with "wave on")?  I have always assumed the change took place as the school re-opened in 1948, and indeed Alan Rozinsky '62 remembers the song being sung one way while the name was pronounced the other way.  Perhaps the song was originally written and performed in the Founder's Era, and the Avon Heirs wanted to be true to the original.  Perhaps the group pictured here had it in their repertoire.
Or perhaps Mrs. Riddle's "Avon" lived on into the 50s, changing over slowly until the current "Avon" won the day.