A short month on a Roman road for Antony's wife (7)
I believe the answer is:
octavia
'antony's wife' is the definition.
(I've seen this before)
'a short month on a roman road' is the wordplay.
'a short month' becomes 'oct' (abbreviation for October; 'short' asks for a short form).
'on' says to put letters next to each other.
'roman road' becomes 'via' (I've seen this in another clue).
'oct'+'a'+'via'='OCTAVIA'
'for' acts as a link.
(Other definitions for octavia that I've seen before include "Sister of Augustus" , "Shakespeare character" , "Wife of Nero" , "Antony's wife" , "tragedy" .)