Onetime Danish province (7)
I believe the answer is:
iceland
'onetime danish province' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for iceland that I've seen before include "Althing its parliament" , "European island country" , "Reykjavik's country" , "The capital city is Reykjavik" , "Nice lad (anag)" .)