Back we come with an Irish boy maybe (4)
I believe the answer is:
ewan
'an irish boy maybe' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'back we come' is the wordplay.
'back' shows that the letters should be reversed in order.
'come' becomes 'an' (I can't justify this - if you can you should believe this answer much more).
'we' written backwards gives 'ew'.
'ew'+'an'='EWAN'
'with' acts as a link.
Can you help me to learn more?
(Other definitions for ewan that I've seen before include "name for Scottish lad" , "-- McGregor, actor" .)