Cheddar maybe tucked into by English fellow (6)
I believe the answer is:
george
'fellow' is the definition.
(George is a man's name)
'cheddar maybe tucked into by english' is the wordplay.
'cheddar maybe' becomes 'gorge' (Cheddar Gorge is a gorge in Somerset).
'tucked into by' is an insertion indicator.
'english' becomes 'e' (abbreviation).
'gorge' placed around 'e' is 'GEORGE'.
(Other definitions for george that I've seen before include "Boy's name" , "Boy --; -- Clooney" , "one in 3 the 12 30 [DROP the DEAD DONKEY]" , "Ira's composer brother" , "Flight controller" .)