Wise old man (6)

I believe the answer is:
nestor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wise old man</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 nestor that I've seen before include "wise old king of Pylos" , "Greek hero and wise counsellor" , "Sage" , "Oldest, wisest Greek (Trojan Wars)" , "Wise counsellor of ancient Greece" .)