Voguish French writer's by southern Scottish city (9)
I believe the answer is:
inverness
'scottish city' is the definition.
(Inverness is a city in Scotland)
'voguish french writer's by southern' is the wordplay.
'voguish' becomes 'in'.
'french writer's' becomes 'verne's' (author Jules Verne).
'by' says to put letters next to each other.
'southern' becomes 's' (abbreviation).
'in'+'vernes'+'s'='INVERNESS'
(Other definitions for inverness that I've seen before include "Highland city" , "in Scotland" , "Scots Highlands city" , "Scottish highland town" , "overcoat" .)