A god of the north originally (4)
I believe the answer is:
thor
'a god' is the definition.
(Thor is an example)
'of the north originally' is the wordplay.
'of' says the answer is hidden in the clue.
'THOR' is hidden within 'north originally'.
(Other definitions for thor that I've seen before include "Thursday is named after this Scandinavian god" , "Norse hammer-wielding god" , "Wielder of hammer" , "Norse deity" , "Son of Odin and Freya" .)