You would create a paradox of before and after.
No one would have because you can't go back in time. But if you could then there grandparents would be dead and the one who killed them wouldn't exist.
Most people have four grandparents, eight great grandparents,16 great great grandparents and 32 great great grandparents. If one set of your great grandparents were first cousins, then then shared one set of their own grandparents. Then you have 30 instead of 32 great great grandparents.
Two people who share the same great great grandparents are third cousins. To find a cousin relationship, find the common ancestor. If common ancestor is grandparents, they are 1st cousins. If common ancestor is great-grandparents, they are 2nd cousins. If common ancestor is great-great-grandparents, they are 3rd cousins.
2096
Your Great-Uncle is your father's uncle or your mother's uncle. Another way to look at it is to realize that your great uncle is the brother of one of your grandparents.
They would be your great great grandparents.
Could be your Grandmother too if she is the mother of the brother or sister of your father or mother. If she is the mother of the spouse of a person married to the brother or sister of your father or mother, then there is really no relation.
If there have been no marriages between cousins, a person will have: 4 grandparents 8 g-grandparents 16 gg-grandparents 32 ggg-granparents 64 gggg-grandparents 128 ggggg-grandparents
You would say; Great-grandfather = Hen Daid Great-grandmother = Hen Nain
They would be killed by other means
Yes, I think I would have. My great grandparents did.
F1 Generation