Couple in dispute about northern European wealth (8)

I believe the answer is:

opulence

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'wealth' is the definition.
(I know that opulence is a type of wealth)

'couple in dispute about northern european' is the wordplay.
'in dispute' indicates anagramming the letters (I've seen this in other clues).
'about' means one lot of letters goes inside another.
'northern european' becomes 'en' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'couple' anagrammed gives 'opulce'.
'opulce' placed around 'en' is 'OPULENCE'.

Can you help me to learn more?

(Other definitions for opulence that I've seen before include "Plenty" , "Means" , "Profusion, luxury" , "State of affluence and luxury" , "Luxuriousness" .)

I've seen this clue in The Telegraph.

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