If she is a step yes. If she is your real granny ,well that is really wrong but it is your life
This would be your great niece. The legality would depend on where you live and how old she is.
It is not legal to marry your own daughter or granddaughter anywhere in the US.
In most places, it is illegal for a grandpa to marry his granddaughter due to laws prohibiting incest and protecting against exploitation.
This is unlikely to be a marriage that can work, except as a marriage of convenience, and of short duration. If you want to marry your great great grandniece, you are talking of marrying the great great granddaughter of your brother or sister. While there is not a close genetic relationship between two people separated by 4 generations, there is also not a close age relationship. Assuming each generation had its first child at the age of 15 years, there would be around 60 years age difference between the two people involved.
Your mother's mother is your grandmother. Your grandmother's sister, whether elder or younger, is your great aunt. Your great aunt's granddaughter is your second cousin. While some ethnic groups, religious groups, and a few legal jurisdictions do not accept marriages between second cousins, most jurisdictions do permit it. So if you are willing to deal with possible disapproval from some family members, you could marry your great aunt's granddaughter - as long as you are male, or you live in one of the few places where gay marriage is legal.
no because they are in the same family as you
yes of course also you can marry your cousions
That would b ur cousins daughter, and your aunts grand-daughter, so, technically speaking, you could legally get married. We_are_all_unique Yes. It is possible.
yes
yes you can!
no....because she is a sister for you
Yes.Also,my great grand parents are still alive and there 10 years apart.My great grandpa is 90 and great grandma is 80.