Roman emperor or Indian prince found in Tennessee (6)
I believe the answer is:
trajan
'roman emperor' is the definition.
(I know that Trajan is a roman emperor)
'indian prince found in tennessee' is the wordplay.
'indian prince' becomes 'raja' (I've seen this before).
'found in' is an insertion indicator.
'tennessee' becomes 'TN' (abbreviation).
'raja' inserted into 'tn' is 'TRAJAN'.
'or' acts as a link.
(Other definitions for trajan that I've seen before include "Roman emperor AD ninety eight to AD one hundred and seventeen" , "Roman emperor, ruled 98 to 117 AD" , "Roman emperor of column fame" .)