European married in middle of Montserrat (5)
I believe the answer is:
swede
'european' is the definition.
(I know that Swede is a type of european)
'married in middle of montserrat' is the wordplay.
'married' becomes 'wed' (wed can mean married).
'in' means one lot of letters goes inside another.
'middle of' indicates the central letters.
The central letters of 'montserrat' are 'se'.
'wed' inserted inside 'se' is 'SWEDE'.
(Other definitions for swede that I've seen before include "Weeds out to get turnip" , "Person like Strindberg" , "Someone from Gothenburg" , "Scandinavian; root veg." , "Large root vegetable" .)