Two sides of article daughter put in Roman's hand (4,3,2)
I believe the answer is:
them and us
'two sides' is the definition.
I know nothing about this answer so I can't judge whether this works.
'article daughter put in roman's hand' is the wordplay.
'article' becomes 'the' (the definite article).
'daughter' becomes 'd' (genealogical abbreviation).
'put in' is an insertion indicator.
'roman's hand' becomes 'manus' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'd' inserted into 'manus' is 'mandus'.
'the'+'mandus'='THEM AND US'
'of' is the link.
Can you help me to learn more?
(Other definitions for them and us that I've seen before include "workers' view of management?" , "adversarial situation" , "Opposites" , "Opposing groups" , "Two camps" .)