Val's a centenarian going around French region (6)
I believe the answer is:
alsace
'french region' is the definition.
(Alsace is an example)
'val's a centenarian going around' is the wordplay.
'going around' says the answer is hidden in the clue.
'ALSACE' is hidden in the letters of 'vals a centenarian'.
(Other definitions for alsace that I've seen before include "somewhere in France" , "Filled pastry" , "area of France" , "Region of France famous for white wine" , "French region; white wine" .)