Your brother would be your son's daughter's great uncle and your son's daughter would be your brothers great niece! Hopefully that makes sense :)
Your brother's daughter has a daughter? That is a great niece.
Your daughter is your brother's niece. Your brother is your daughter's uncle
Your brother's daughter is your niece. You are her Aunt or Uncle.
Dina Bonnevie has two sons and one daughter. Her sons are with her former husband, actor and director, and her daughter is from a later relationship. She has often spoken about her close relationship with her children.
Cousins
Great Niece.
A second cousin.
it will be your niece......
The relationship to you would be your cousin !
Your brother's daughter is your niece..and you are her AUNT.
Your brother's daughter and your daughter are first cousins to each other. Your brother's daughter and your daughter's daughter (your granddaughter) are first cousins, once removed, to each other.
Your sister's daughter and your sister's brother are niece and uncle to each other. The daughter is the niece of the brother and the brother is uncle to the daughter.