Irish novelist O'Brien (4)
I believe the answer is:
edna
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">irish novelist o'brien</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 edna that I've seen before include ". . . . O'Brien, ... Saint Vincent Millay" , "Dame - Everage, housewife-superstar" , "Famous dame" , "Girl for Dane" , "___ O'Brien, Irish novelist, b. 1930" .)