Emperor let her gate-crash parties (7,3,5)
I believe the answer is:
charles the great
'emperor' is the definition.
(Charles the Great is an example)
'let her gate-crash parties' is the wordplay.
'parties' is an anagram indicator (the letters move or party around).
'let'+'her'+'gate'+'crash'='lethergatecrash'
'lethergatecrash' with letters rearranged gives 'CHARLES THE GREAT'.
Want a hint initially instead of a full solution?
Install my app