I have a new Naming Rule: the eldest boy child of the family always has a U intial, the eldest girl child of the family has a I intial. And the child who was born after both the oldest boy and the oldest girl child was born, that would have an I if it would be an girl, U if boy.. Example, if the oldest boy child has the name Nanu, it get's changed to Unu. If the oldest child girl has the name Tiki, it gets changed to Iki. If the child who is born after them has the name Fiji, it is renamed to Iji. Other than that, I also give them surnames: If it is a boy, the surname is the fathers name: If it was a girl, it would be a combo of the parents names. Example:

mother: Mama Pili

EDIT: I know that I have been posting in this thread before.
father: Papa Momo
oldest boychild: Unu Papa
oldest girlchild: Tiki Mapa
child born after girl and boychild are born: Iji Mapa