Wife of Hercules (4)
I believe the answer is:
hebe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wife of hercules</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 hebe that I've seen before include "Greek goddess of youth, wife of Hercules" , "Youth personified" , "Daughter of Zeus and Hera" , "Goddess of youth and flowering shrub" , "Cup-bearer of the gods and flowering shrub" .)