The folktale theory is interesting but not really tenable, most people came into europe long after the last neandertal died.
The last neandertal. What a lonesome thing to be the last of a species, noble somehow too, or so I imagine.
So what did the neandertals in, or is that still(always be) somewhat in question? Did there larger bodies and need for more energy stress them more in some way during lean times, compared to H.sapien, or possibly have nothing or little to do with it?
I would be very interested in a "Folktale Theory" thread. I am still hunting about for Ghillie Dubh info; though I did find an interesting description of (a) Tengu.
"While human myth attributes all sorts of magical intervention in their lives to the Tengu - both good and bad - the vast majority of these incidents are nothing more than imagination run amok. While Tengu certainly do possess vast magical powers, they have little or no interest in using these gifts to either aid or harm humans. Though they do sometimes intervene to return lost children to their parents, they do so out of a wish for privacy, as wandering humans in their forest detract from their single-minded practice of intellectual discipline. "