Abode of Roman origin (5)
I believe the answer is:
manor
'abode' is the definition.
(I know that manor is a type of farm)
'of roman origin' is the wordplay.
'of' says the answer is hidden in the clue.
'MANOR' is hidden within 'roman origin'.
(Other definitions for manor that I've seen before include "Mansion of a wealthy person" , "Large country house for Roman" , "house on estate" , "Land once belonging to a nobleman" , "lord's home" .)