The son of your mother's sister is your first cousin. While marriage between first cousins in accepted in some communities, it is rejected in others. Whether you can make such a marriage depends in part on what your community and your local laws say, and on whether you are willing to become estranged from that community if they object.
Yes, as the brother of your mother is your uncle and his sister-in-law is his wife's sister, who is not related to you, therefore her daughter would not be related to you either.
The children of sisters are first cousins. In most jurisdictions, first cousins can legally marry, but sometimes the family culture or the broader culture of the region frowns on such marriages.
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.
Our cousins are our mothers sisters son :)
Some countrys have strange laws regarding this sort of relationship However as there is no blood relationship there should be no problem in most places.
She is your third cousin.
Mothers sister is aunt and son is cousin so daughter wouldn't that be a niece
Cousin
The English language makes no distinction between an elder sister and a younger sister, or their children. Your sister's son is your nephew.
Your younger brother's wife's sister's daughter would be your son's cousin.
My younger son provoked his sister every morning.
Yes, he can. But he'd be marrying his step-aunt.
The English language does not have special terms for a relationship involving an older, or a younger, brother or sister. Your brother's son is your nephew and you are his uncle, if you are a man, or his aunt, if you are a woman.