Pompous dwarf's question about his identity? (5)

I believe the answer is:

medoc

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'question about his identity?' is the definition.
I know nothing about this answer so I can't tell whether this works.

'pompous dwarf's' is the wordplay.
'pompous' becomes 'me' (I can't explain this - if you can you should believe this answer much more).
'dwarf's' becomes 'doc' (dwarf in Disney's Snow White and the Seven Dwarfs).
'me'+'doc'='MEDOC'

Can you help me to learn more?

(Other definitions for medoc that I've seen before include "Wine-growing area" , "Red wine from southwest France" , "that's regularly drunk?" , "Type of wine" , "French red wine" .)

I've seen this clue in The Guardian.

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