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The children of your uncle are your first cousins. The children of your first cousins are you first cousins once removed. Thus the grandchildren of your uncle are first cousins once removed.

The related link I will make below explains how all this works.

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12y ago
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12y ago

Your sister-in-law is either the wife of your brother or the sister of your spouse.

In either case, her children are your nieces and nephews and her grandchildren are your great nieces and great nephews. You are great aunt or great uncle to her grandchildren.

However, if her grandchildren are descended from children she had before she became your sister-in-law (i.e. from a previous marriage), neither her children nor her grandchildren are related to you.

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14y ago

Yes, unless you, your grandpa or your parent who is the child of your grandpa, were adopted.

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14y ago

Your grandparent's first cousins are your first cousins, twice removed.

The grandchildren of your grandparent's first cousins are your third cousins.

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13y ago

Your grandfather's sister is your great aunt. Her son's daughter is her granddaughter.

The grandchildren of you great aunts and great uncles are your second cousins.

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Q: How are you related to your sister-in-law's grandchildren?
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Related questions

How are your grandchildren and nephew related?

Your grandchildren and your nephew are related t each other as first cousins, once removed.


How are you related to your grandfathers sisters grandchildren?

Your grandfathers' sisters' grandchildren are your second cousins.


How are your grandchildren and your great niece related?

Your grandchildren and your great niece are second cousins to each other.


Is your niece related to your grandchildren?

Your niece is the first cousin of your children and the first cousin, once removed, of your grandchildren.


Does neil Armstrong have grandchildren?

Yes he has only 5 Actual grandchildren the other 5 are not related. They are his second wifes grandchildren from his widow's first marriage


What do you call two grandmothers related by different grandchildren if my grandson has an older half brother with a different grandmother?

There is no word in the English language for a relationship between grandmothers of related grandchildren


How are your children related to your brother's grandchildren?

Your children are the first cousins of your brother's children, and the first cousins once removed of your brother's grandchildren.


How are you children and your grandchildren related such as having another baby after your oldest child has your grandchild?

Your children are the parents of some of your grandchildren. They are also the aunts or uncles of those of your grandchildren who are not their children. Even you have a child who is younger than one of your grandchildren, that child is still the aunt or uncle of all those grandchildren.


How are my grandchildren related to my brother and sister's children?

If I knew the answer, I wouldn't have asked it!


How are mine and your sister's grandchildren related?

Adam was the firs person on the planet...


Is your first cousin twice removed grandchildren still related to you by blood?

Yes


How are you related to your grandma's sisters grandkids?

Your grandmother's sister's grandchildren are your second cousins.