By the Indian custom, he will be considered as a brother, so how she can marry him. In other cultures they would be First Cousins. Marriage between First Cousins has been acceptable in some European cultures, including the European royal families and some European Jewish communities.
Your mother's sister's daughter is your first cousin. Many cultures and societies don't approve of marrying your first cousin, considering it to be incest. However some cultures and societies permit it, even today.
Mother's grandson as regards her daughter is either her (daughter's) son or her (daughter's) nephew.
Your daughter and your sister's son are first cousins to each other. Your sister's son's daughter (her granddaughter) and your daughter are first cousins, once removed.
Your sister's daughter is your niece. You are her aunt (if you are a woman) or her uncle ( if you are a man).
Your aunt is either your parent's sister or the wife of your parent's brother. If she is your parent's sister, her husband, his sister and her daughter are not related to you. If your aunt is the wife of your parent's brother, then her husband's sister is your mother (and her daughter is you or your sister) or she is another of your aunts (and her daughter is your first cousin).
Yes, Mary I was the sister of Elizabeth I. They had different mothers, but the same father. Mary's mother was Katherine of Aragon, and Elizabeth's mother was Anne Boleyn. Their father was Henry VIII.
no....because she is a sister for you
Such a person would be your second cousin, and in most places marriage between second cousins is legal.
A Hindu boy can marry his mother's sister's son's daughter if he can support her. This is legally acceptable on a Vivah Sanskar.
Niece. Your mother has children, you and your sister. So your mother's daughter is your sister. When she has a daughter, this is your niece.
cousin
yes you can!
Mothers sister is aunt and son is cousin so daughter wouldn't that be a niece
yes
Probably yes if you have no blood relate to her.
Sister, but possibly only half sister if the baby and the father's other daughter have different mothers
In the Western World- yes.
Yes, he can. But he'd be marrying his step-aunt.