G'day Helen, Joe and Catrin,Thanks to everyone for the fine work - Mudcatry at its best!
I see that my guesses were reasonably accurate (except that it was just a little too late for the '30s). It is a beautiful song with a striking tune and I hate not knowing the background. It was sung by a local Sydney singer of Jewish background, Dave Alexander, but he died a year or two back, so I lost my chance to ask him.
I don't know why my searches ([dona dona], [donna donna] and [mournful eye]) didn't work but I am relieved that it is indeed in the DigiTrad. I will appreciate the chords -at least for the guitar-inclined at my Monday Night Workshop!
Regards,
Bob Bolton