English diarist (5)
I believe the answer is:
pepys
'english diarist' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for pepys that I've seen before include "English civil servant and diarist, d. 1703" , "Samuel ---, C seventeen Admiralty secretary" , "Samuel -, noted diarist" , "Old writer" , "Renowned diarist" .)