One's nephew, niece.
Inagāwit Matā'ag han amono'onan imbaluy han pogtangna an hi Nabāngul.
Matā'ag adopted his niece who is the daughter of his sister Nabāngul.
A nephew or niece is the child of one's brother, sister or 1st - 4th cousin, agi. He or she is a blood relative; the nephew or niece of one's spouse is informally recognized as one's nephew or niece only for the purpose of demonstrating one's affection for him or her.