What is the relationship between your grandmother's brother's children and your children?

Answer 1

If you are referring to YOUR grandmother and grandfather then your children are their great grandchildren. If you are referring to your parents, then your children are their grandchildren. The primary kinship dominates.

Answer 2

The children of your grandmother and the children of her brother (your great uncle) are first cousins to each other.

Your children and great uncle's children are first cousins, twice removed, to each other.

Answer 3

If the grandmothers of two people were first cousins to each other, then the two people are third cousins to each other.

Answer 4

The grandchildren of one of two first cousins are third cousins to the grandchildren of the other.

Answer 5

Second cousins, once removed.