Dear Shri Rao,
This is not much "historical" in strict scientific terms. This is more a consipiracy theories, like all other comes by hear say. Though my logical historic side says, forget it, my love for mythologies and trying to prove them, says, give it a try. That is why I put this bare question in front of everyone. This is like the Holy Grail theory, no begining, no evidence.
However, Nine Unknown Men is mentioned in a few western documents (as hear say evidences, again) especially one on Pope Sylvester II. Madame Blavatsky is also said to spoken about these Nine Unknown Men (she has mentioned in her book The Secret Doctrine). I am going through some books of adyar library these days to cull any info, by and large I have been unsuccessful.
Many historical findings start only from allegations and especially in India from Folk lores. Documents have to be found out to corroborate the allegation. You know better, you are historian.