Dark time reportedly for Lancelot? (6)
I believe the answer is:
knight
'lancelot?' is the definition.
(thesaurus)
'dark time reportedly' is the wordplay.
'dark time' becomes 'night' (I've seen this before).
'reportedly' shows a homophone (sound like).
'night' is a homophone of 'KNIGHT'.
'for' is the link.
(Other definitions for knight that I've seen before include "Chesspiece - person dubbed" , "He was trained in arms and chivalry in olden days" , "... for example, Tippett" , "He's a Sir in the UK" , "Ladies' champion" .)