Unknown John
I believe the answer is:
doe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unknown john</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 doe that I've seen before include "Last FA Cup winners" , "Female kangaroo" , "Rabbit, perhaps" , "A female deet" , "She eats vegetarian food" .)