Your grandmother's sister is your great aunt. Your great aunt's daughter is your first cousin, once removed.
go ahead if you want to marry your aunt
If you have no siblings but your daughter has an uncle, he is the brother of your spouse, your brother-in-law.
If your great great grandmothers were sisters, your common ancestors are your great great great grandparents. That makes you 4th cousins.
Your grandmother's sisters are your Great Aunts.
Yes, along with your grandfathers' sisters, if any.
you are second cousins.
third cousins
My ancestors
Sisters, mother, aunts, grandmothers, nieces, cousins, etc.
If she is your sisters daughter then she is your neice :)
If she's not your mother, that would make her your Aunt.
no problem man! enjoy