Driver of "Marriage Story” (4)
I believe the answer is:
adam
'driver of marriage story' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for adam that I've seen before include "who was tempted by mate?" , "Eden inhabitant" , "Faith, for example" , "Eves husband" , "Robert-, eighteenth century Scots architect" .)