Well more like FI is a uncle again but I claim his brothers' kids too! This one belongs to his twin brother.
FI has 4 brothers and this newbie makes 5 nephews and 3 neices.
Well actually only 3 nephews and 1 neice because the others don't actually belong to the brothers. Their girlfriends had children prior to meeting them but we think of them as as neices and nephews too lol.
I just wanted to announce this in my excitement