auntie
He would be your paternal great grandfather
Your father's brother's son is your first cousin. Your father's brother's grandson is your first cousin, once removed.
Your grandfather's son is either your father or your uncle. Your daughter's grandfather is your father. or your father-in-law.So your daughter's grandfather is your grandfather's son or a brother if there is more tha one son, or, as your father-in-law, is not related to your grandfather's son at all.
Your aunt's great uncle's father is her great grandfather, or is not related to her at all if the great uncle married a sister of her grandfather).He would then be your great great grandfather - or not related to you at all.
Your daughter's grandfather's brother's son is her mother's or father's first cousin and her first cousin, once removed.
his uncle
Your great-grandfather is your parent's grandfather. He is the father of your grandparent, making him part of your family tree one generation above your grandparents. In terms of family relationships, he is considered your ancestor.
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.
Your great grandfather!
He is you grandfather in law
Your grandfather's father is your great grandfather.
Your father's grandfather is your great grandfather.