Your grandfather's brother is your great uncle and your parent's uncle.
Your grandfather's brother is your great uncle (some would say your grand uncle). You are his great niece (if you are a girl) or his great nephew (if you are a boy).
The brother of your great great grandfather is your great great grand uncle, or, as some would say, your great great great uncle.
Your father's brother is your uncle. Your Grandfather's brother is your great uncle. Your Great Grandfather's brother is your great great uncle.
Your grandfather's brother is your great uncle
Your grandfather's brother is your great uncle.
Grand Aunt or Grand Uncle depends what gender you are.
Your grandfather's brother is your Great Uncle.
The son of your great grandfather's brother was your grandfather's first cousin. That makes him your first cousin, twice removed.
Your grandfather's uncle is your great great uncle. Your grandfather's brother would be your great uncle
Your grandfather's brother is your great uncle. The wife of your great uncle is your great aunt.
Well your father's father is your Grandfather. And it depends how your uncle is related to your grandfather. Your uncle could be your grandfather's son, or your grandfather could have a sibling who's child is your uncle- which would make him your Grandfather's nephew.