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Your sister's son is your nephew
His sons are your grandnephews, and his daughters are your grandnieces.
What else can I help you with?
What relation is your sisters sons kids to you?
Your sister's son is your nephew His sons are your grandnephews, and his daughters are your grandnieces.
Is it grammatically correct to say - the sons and their sisters?
YesThe son and his sister = 1 son, 1 sisterThe sons and their sister = many sons, 1 sisterThe son and his sisters = 1 son, many sistersThe sons and their sisters = many sons, many sistersThough in reality this is a strange way to say it. More normal would be "The sons and daughters".
What relation is your grandfathers sisters son to you?
cousin
What relation is your sons kids to you?
Your son's children are your grandchildren.
What we call your sisters sons?
My sister's son is my nephew.
What is mothers Sisters sons son called?
cousin
What relation is your sons son to you?
Your grandfather's son's son could be:you (if you are a boy)your brotheryour first cousin
What relation are you to your dad's sisters son?
Your father's sister is your aunt and her son is your first cousin.
What is your mothers sisters sons son to you?
First cousin, once removed.
Is your sisters son any relation to your husbands sisters son?
Well, it depends how close you are to your husbands family. If you really want to know they are cousins-in-law.
What relation is your brother to your sons son?
They share a common Grandparent. That makes them first cousins.
What relation would your sisters husbands brothers daughters son be?
your second nephew
