There was a thread on this list, during july 2014, that discussed the issue of Mahabharata and 'real history' as a matter of course:

That part of the thread may be useful for the present inquiry. 

Jung's works should be useful to deal with the issue of 'truth' in 'myths' from the point of view of Psychoanalysis (more precisely analytical psychology).  

Nagaraj Paturi
Hyderabad, Telangana, INDIA.
Former Senior Professor of Cultural Studies
FLAME School of Communication and FLAME School of  Liberal Education,
(Pune, Maharashtra, INDIA )