Increasing inte marriage  among the chiefly households of Lakeba and Bau, thereafter, saw the increasing use of Ratu and Adi by members of the Vuanirewa dynasty.
The expansion of intermarriage  in the main families of Lakeba and Bau led to an increase in the adoption of Ratu and Adi by the Vuanirewa clan, which was a significant development in their social dynamics.