à eux
They had a culture of their own.
Ils avaient leur propre culture.
They have a culture of their own.
Ils ont leur propre culture.
You speak as one of their own.
Vous parlez comme l'un des leurs.
— The Lord of the Rings: The Two Towers (2002)
Ils avaient leurs propres voix.
— The Lord of the Rings: The Two Towers (2002)