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Your grandson and your sister's grandson are second cousins to each other.

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13y ago
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11y ago

Your granddaughter and your sister's granddaughter are second cousins.

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12y ago

she would be his niece

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11y ago

Great grandmother and great granddaughter

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12y ago

great auntie or uncle's

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12y ago

First cousins once removed.

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Q: What is the relationship between your grandson and your sister's grandson?
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Related questions

What family relationship my brother's granddaughter and my granddaughter?

Your sisters grandson would be your grandnephew.


What is the relationship between your grandson and your brother's grandson?

Your grandson and your brother's grandson are second cousins to each other.


What relationship is to your sisters son?

Your sister's son is your nephew and you are his aunt (if you are female) or his uncle (if you are male.


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 granddaughter and your sister's grandson to me?

nothing


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Aunt and nephew


What is the relationship between my grandson and my brother's son?

First cousins


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What family relationship is your great great grandmothers sisters great great grandson?

Your great great grandmother's sister's great great grandson is your third cousin, twice removed.