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They share a common Grandparent. That makes them first cousins.
What else can I help you with?
What relation to you is your sisters sons son?
Your sister's son is your nephew His sons are your grandnephews, and his daughters are your grandnieces.
What does the father of his son call his son's brother?
He calls his sons brother son also
What relation is your brother-in-law's son to you?
Your brother-in-law's son is your nephew
What relation is my brother's son son?
Your brother's son is your nephew. Therefore, your brother's son’s son would be your great-nephew. In summary, your brother's son son is your great-nephew.
What relation is your sons kids to you?
Your son's children are your grandchildren.
What is the relation named with the son of your cousin brother?
Well, your cousin's brother is also your cousin, and a cousin's son is also your cousin.
What relation to you is your son-in-laws brother?
There is no genealogical relationship. He is just your son-in-law's brother.
WHAT IS MY RELATION WITH MY BROTHER'S SON OR DAUGHTER?
Your brother's son or daughter is your nephew or niece respectively.
What relation is your son to his brothers son?
Your son would be the uncle of his brother's son.
What relation are you to your mother's brother's sons and daughter?
A second cousin.
Is sister's son is blood relation of sister's brother?
The sister's son would be the nephew of her brother.
What relation is your godmothers son to you?
God Brother
