Charles perhaps finally enjoying putting family first (4)
I believe the answer is:
king
'charles' is the definition.
(Charles I or Charles II)
'finally enjoying putting family first' is the wordplay.
'finally' suggests the final letters.
'putting family' becomes 'kin' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'first' means one lot of letters go next to another.
The last letter of 'enjoying' is 'g'.
'g' put after 'kin' is 'KING'.
'perhaps' acts as a link.
Can you help me to learn more?
(Other definitions for king that I've seen before include "as Solomon was" , "Man with a crown" , "See 23 Down" , "Most important chesspiece" , "Martin Luther -" .)