Between the ages of 23 and 30 are prime times. You are young enough for it to not have major health affects on the mother and the parents are young enough to keep up with the child.
This varies a great deal and cannot be accurately pinned down.
The child must reach the age of eighteen.The child must reach the age of eighteen.The child must reach the age of eighteen.The child must reach the age of eighteen.
You are the great uncle of your niece's child if you are male. If you are female, you are the child's great aunt.
you would be the child's great aunty or uncle Therefore, they would be your great niece or nephew.
If the child is believed to be in danger, they can remove the child at any age.
Your great great nephew's child is your great great great niece or great great great nephew, depending on the sex of the child.
Your mother gave birth to you, her child. When the child has a child that is a grand child. When the grand child has a child, that is a great grand child.
This can easily vary from anywhere between 60 and 140 years (e.g. if every generation, a mother gave birth to a child at age 15 ... versus ... if every generation, a mother gave birth to a child at age 35). However, regardless of the number of years, there are precisely three generations separating you and your great great grandmother. They are the generations of your parents, your grandparents and your great grandparents.
At any age.
100
Your great nephew's child is your great great niece (if a girl) or great great nephew (if a boy).
A great aunt or great uncle.