Redmayne of "The Theory of Everything” (5)
I believe the answer is:
eddie
'redmayne of the theory of everything' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for eddie that I've seen before include "Man" , "Boy" , "Fellow" , "-- the Eagle, ski jumper" , "-- Izzard, comedian" .)