He and I go to the French capital (6)
I believe the answer is:
manila
'capital' is the definition.
(Manila is an example)
'he and i go to the french' is the wordplay.
'he' becomes 'man' (**).
'and' is a charade indicator (letters next to each other).
'go to' is a charade indicator (letters next to each other).
'the french' becomes 'la'.
'man'+'i'+'la'='MANILA'
(Other definitions for manila that I've seen before include "Adulterated, tainted" , "Animal or capital in the Phillipines" , "Island capital" , "Strong brown paper originally made from hemp" , "Brown paper and Philippine city" .)