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Your sister would be your grandson's great aunt.
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∙ 12y ago
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What relationship is your sister to your grandson?
Your sister is your grandson's great aunt. He is her great nephew.
What is the relationship of your sister's child and your grandson?
Your sister's child and your grandson are first cousins once removed.
What is the relationship between your granddaughter and your sister's grandson to me?
nothing
What relationship is your great grandfather's sister's great grandson to you?
Your great-grandmother's sister's grandson is your second cousin once removed.
What is the relationship between your grandson and your sister's grandson?
Your grandson and your sister's grandson are second cousins to each other.
What relationship to you is your grandfather's sister's great grandson?
Your second cousin once-removed.
What relationship is your grandfather's sister's great grandson to you?
2nd cousin once removed
What relationship does your sister's son have to your daughter's son's son?
Your daughter's son's son is your great grandson. Your daughter and your sister's son are first cousins. Your great grandson and your sister's son are first cousins, twice removed. Your great grandson and your sister's great grandchild are third cousins.
What is the relationship to your granddaughter to your sisters sons son?
Your granddaughter and your sister's grandson are second cousins.
What is the relationship between your aunt's grandson and your father's grandson?
Your father and your aunt are siblings (brother and sister) The grandchildren of siblings are second cousins to each other.
What is your great grandmother's sister's grandson to you?
Your grandmother's sister's grandson is your second cousin.
What relation is your grandson to your sister?
Your grandson is your sister's great nephew and she is his great aunt.
