British naval hero (6)
I believe the answer is:
nelson
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">british naval hero</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for nelson that I've seen before include "Admiral called 5" , "Noted English admiral" , "One-eyed English admiral seen on pillar" , "English admiral, mortally wounded at Trafalgar" , "Trafalgar victor" .)