Titled ones (6)
I believe the answer is:
nobles
'titled ones' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for nobles that I've seen before include "Aristocrats" , "Members of the aristocracy" , "Dukes, earls and other titled chaps" , "Former Eng. gold coins" , "Men with titles like earls and lords" .)