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What else can I help you with?
What relation is your nieces daughter?
Great-niece.
What relation is my nieces' daughter to me?
your 2nd niece...!
What is your nieces nieces daughter to you?
Grand niece.
What relation is your nieces son to you?
Second Cousin
What relation is my brothers' children to my children?
Nephews and nieces
Your daughter is what relation to your nieces son?
Your daughter and your niece are first cousins. Your daughter than your niece's son are first cousin's once removed. Your daughter's child and your niece's child are second cousins to each other.
What is your nieces child to your daughter?
Your daughter and your niece's child are 1st cousins once removed.
What relation is my brother's children to me?
Your borther-in-law's children are your nieces and nephews. You are their uncle or aunt, as is your spouse.
What relation is your niece to your sister?
Your niece is the daughter of your sister. If you have more than one sister, you can have nieces who are also the nieces of your sister, since they are daughters of the other sister.
What would you be to your nieces daughters?
My niece's daughter is my great niece.
What relation is your sisters daughters children to you?
They would be great nieces or great nephews.
What relation would you call your sister's grandchildren?
They are your great nephews and/or great nieces. Alternately, some people say grand-nephews, grand-nieces.
