The Grandmother to your child can either be your Mother or youe Mother-in-Law
Your grandmother's brother is your great uncle and you are his great niece or great nephew. Your child is his great great niece or great great nephew.
If it is not your common grandparent, there is no relationship.
Your mother's mother is your Grandmother.
Your great-aunt
Say a woman (let's call her Jane) has a daughter (let's call her Mary) and the daughter (Mary) has a child (let's call the child Carol) Jane is the grandmother of Carol. If Jane has a child other than Mary, that child is Carol's Aunt or Uncle and Carol is that child's Nephew (if Carol is a boy) or Niece (if Carol is a girl). So the relationship between a grandmother's baby and her daughter's baby is that of Aunt/Uncle to Niece/Nephew.
Your mother's mother is your grandmother. You are her grandchild.
Your grandmother's nephew is first cousin to one of your parents, and is therefore your first cousin once removed.
When one person's great grandmother is the another person's great aunt, the relationship between the two people is that of second cousins, once removed.
A Russian grandmother is the grandmother of a child, but she has to be Russian. Like a American or British grandmother is the grandmother to a child, but she has the respective heritage.The Russian term for grandmother is babushka.
No. You have no legal rights regarding the child. However, maintaining a congenial relationship with the ex-wife and the child's parents would more likely encourage them to allow you to maintain a relationship with the child.
The grandchildren of your grandmother and the grandchildren of any of her siblings (including of her brother) are second cousins to each other.
2nd cousins