Forename of the six-footer in front (5)
I believe the answer is:
anton
'forename of' is the definition.
The definition suggests a singular noun which matches the answer.
'six-footer in front' is the wordplay.
'six footer' becomes 'ant' (an ant has six feet).
'in front' becomes 'on' (I am not sure about this - if you are sure you should believe this answer much more).
'ant'+'on'='ANTON'
'the' acts as a link.
Can you help me to learn more?
(Other definitions for anton that I've seen before include "-- Bruckner, composer" , "-- Chekhov, Russian dramatist" , "Chekhov maybe" , "- Chekhov, playwright" , "..... Chekov" .)