That man marrying women in Scottish group (8)
I believe the answer is:
hebrides
'scottish group' is the definition.
(Scottish island group)
'that man marrying women' is the wordplay.
'that man' becomes 'he' ('he' refers to a man).
'marrying women' becomes 'brides' (I can't explain this - if you can you should believe this answer much more).
'he'+'brides'='HEBRIDES'
'in' is the link.
Can you help me to learn more?
(Other definitions for hebrides that I've seen before include "Isles?" , "Shipping Forecast area" , "Island group off NW Scotland" , "Islands off north-west Scotland" , "Debris he found in islands off NW Scotland" .)