My great-great-grandfather and his great-great-grandfather were brothers
His great-great-grandfather and his great-great-grandfather were brothers.
Grandfather, great-grandfather, great-grandfather, great-grandfather
In the traditional China family hierarchy, grandfather was the father of father, great-grandfather was the father of grandfather, and great-great-grandfather was the father of great-grandfather. In the common family hierarchy, there was no such standard address as " great-grandfather." If one were to infer according to the logic of family seniority, great-grandfather might be an ancestor who was one generation higher than great-great-grandfather, but this was not the traditional family seniority title.
Great-grandfather, great-grandfather
Great-grandfather, great-grandfather, and great-grandfather were the Chinese names for family members. According to the information provided, his great-grandfather was the third generation, and his great-grandfather was the fourth generation. However, there was no clear explanation regarding the Mystic Ancestor in the information provided. Thus, it was impossible to determine the seniority of the Mystic Ancestor.
Is great-grandfather great-grandfather?
Yes, great-grandfather was also commonly known as great-grandfather. In the family hierarchy, he was three generations higher than himself, belonging to the upper nine generations of the eighteen generations of ancestors. He was his father's grandfather and his great-grandfather.
Is Grandpa's grandfather a great-great-grandfather?
Yes, great-great-grandfather was great-great-grandfather's father, which meant that he was great-grandfather's grandfather.
What was the name of his great-great-grandfather's great-great-grandfather?
His great-great-grandfather's great-great-grandfather.
My great-great-grandfather
The common name for great-great-grandfather was great-great-grandfather.
My grandfather and her great-grandfather were brothers.
From the perspective of kinship, your grandfather and her great-grandfather are brothers, which means that you have a certain family connection. You are distant relatives of the same family. According to the family hierarchy, there is a difference in seniority between you and her. This kind of kinship may be reflected in family affairs and social interactions, such as family gatherings, sacrificial activities, and other roles. However, in modern society, this kind of distant relationship was usually not like close relatives (such as immediate relatives and collateral relatives within three generations). There were more special regulations or restrictions in laws and traditional customs.
Is Grandpa's grandfather a great-great-grandfather or a descendant?
His grandfather's grandfather was his great-great-grandfather. In the family's generation relationship, starting from the person himself, the order was father, grandfather (grandfather), great-grandfather, and great-great-grandfather. Therefore, the grandfather of the grandfather was the great-great-grandfather.
What is the seniority of great-great-grandfather?
His great-great-grandfather was his grandfather's father, which meant that he was his great-grandfather.
Can great-great-grandfather see it?
In the normal lifespan of a human, it was very rare to see his great-great-grandfather, who was four generations away from him. However, if every generation in the family gave birth early and the great-great-grandfather lived a long life, it was possible to see him. For example, in some families with five generations under the same roof, there might be situations where the great-great-grandfather and great-great-grandson met and got along.