Muse of history (4)
I believe the answer is:
clio
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">muse of history</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for clio that I've seen before include "one historically inspiring" , "1 across's Muse - from Renault?" , "one of nine sisters" , "Muse of history (from Renault?)" , "inspiration for historians" .)