Grail seeker (7)
I believe the answer is:
galahad
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">grail seeker</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 galahad that I've seen before include "K" , "One of Arthur's knights" , "The most virtuous knight at the Arthurian Round Table" , "the noblest of men" , "Chivalrous knight" .)