One of the family gets redhead into trouble (7)
I believe the answer is:
brother
'one of the family' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'redhead into trouble' is the wordplay.
'redhead' becomes 'r' (the head/first letter of 'red').
'into' means one lot of letters goes inside another.
'trouble' becomes 'bother' (synonyms).
'r' put inside 'bother' is 'BROTHER'.
'gets' is the link.
Can you help me to learn more?
(Other definitions for brother that I've seen before include "Relation" , "Close relative" , "Eg, monk, friar" , "Union member - male relative" , "Trade unionist" .)