Noted diarist (5)
I believe the answer is:
pepys
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">noted diarist</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for pepys that I've seen before include "Famous diary keeper" , "Famous English diarist" , "English civil servant and diarist, d. 1703" , "London diarist" , "Samuel -, English diarist" .)