Issue for a little nobleman (7)
I believe the answer is:
problem
'issue' is the definition.
(thesaurus)
'for a little nobleman' is the wordplay.
I cannot really understand how this works, but
'for' could be 'pro' (as in being 'pro' something) and 'pro' is found in the answer.
'little' could be 'l' (abbreviation) and 'l' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for problem that I've seen before include "Difficult matter; puzzle" , "Quandary or dilemma" , "Question or source of perplexity" , "Difficult matter to solve" , "Difficulty, poser" .)