One strange old fellow, European wine connoisseur (9)
I believe the answer is:
oenophile
'wine connoisseur' is the definition.
(I've seen this before)
'one strange old fellow european' is the wordplay.
'strange' indicates anagramming the letters.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'fellow' becomes 'phil' (I can't justify this - if you can you should believe this answer much more).
'european' becomes 'E' (abbreviation e.g. EU).
'one' is an anagram of 'oen'.
'oen'+'o'+'phil'+'e'='OENOPHILE'
Can you help me to learn more?
(Other definitions for oenophile that I've seen before include "wine I enjoy" , "Lover of wine" , "Connoisseur of wine" , "grape nut" , "Drink lover" .)