Related to lord (4)
I believe the answer is:
told
'related' is the definition.
(I've seen this in another clue)
'to lord' is the wordplay.
'lord' becomes 'ld' (abbreviation for the aristocratic title).
'to'+'ld'='TOLD'
(Other definitions for told that I've seen before include "Produced effect; related" , "Related (a story)" , "Authorised - broadcast" , "Assured" , "Informed; narrated" .)