Spanish conquistador (6)
I believe the answer is:
cortez
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">spanish conquistador</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for cortez that I've seen before include "Spaniard who defeated the Aztecs and conquered Mexico" , "Spanish conquistador Keats had 'Silent, upon a peak in Darien'" , "Spanish conquistador (Z, not S)" .)