I worked on this subject for a long time, but I never got a chance to debate the issue.
I have read some of the oldest "folk tale" from my country, and to me it seems plausible that Old Giants lived here at the same time as their small short-lifed grand-grand-grand-grand-grand-children.
I think it was the Giants who wrote about the "dwarf"
and their grand-children who wrote about the "trolls"
Any thoughts?