Some arguing over Norwegian ruler (8)
I believe the answer is:
governor
'ruler' is the definition.
(thesaurus)
'some arguing over norwegian' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'GOVERNOR' can be found hidden inside 'arguing over norwegian'.
(Other definitions for governor that I've seen before include "Head of an American state" , "One exercising authority" , "Ron, go run up the state head" , "person put in charge" , "US state head" .)