Alan,
This gets more and more interesting but I don't know how I can continue to participate in this discussion?
I quoted Wiener and you tell me that she, as well as her local informants, got it wrong.
I quoted M Kerner, who I suspect is the source of the Durga hilt theory, and you tell me that he also got it wrong.
I quoted that Annapurna is one of the manifestations of Durga, what is found in the reference works on Hinduism, and you tell me, implicit, that it is wrong and and that it's all Uma and no Durga inbetween.
I have some more ideas to add but unfortunately they are all based, or dependant, on books and not on my own field research.
So let's summarize:
In my first answer to Ganja I wrote:
"Your keris hilt, with female forms, usually is considered to represent Durga, a shakti of Shiva."
and on your question:
"where did this Durga belief first arise?"
I would answer M Kerner (as far as I know).
I have really enjoyed reading your comments, as I always do. But unfortunately if the major ideas that are written about this subject, as far as I have seen and read, are wrong then I don't have anything more to contribute to this discussion.
Thanks for "unveiling" this to me.
Michael