Journalist having conflict with duke and king (6)
I believe the answer is:
edward
'king' is the definition.
(I know that Edward is a king)
'journalist having conflict with duke' is the wordplay.
'journalist' becomes 'ed' (short for editor).
'having' says to put letters next to each other.
'conflict' becomes 'war' (war is a kind of conflict).
'with' means one lot of letters go next to another.
'duke' becomes 'd' (abbreviation).
'ed'+'war'+'d'='EDWARD'
'and' acts as a link.
(Other definitions for edward that I've seen before include "Christian name of Enigma Variations composer" , "Elgar or Lear, for instance" , "Jointly the most popular name for a king of England" , "Mans name" , "Regnal name of six kings of England" .)