You aren't related. You do not share a common ancestor.
that would be your niece or if you want to be fussy then your niece in law!
Technnically, she is not related as you do not share a common ancestor. She would refer to you as Aunt and she is your niece. Whether he is your first, second or fifth husband, his niece is your niece while you are married to him.
No. Your wife's niece is also your niece, but the husband of the niece is not related to you or to your wife.
either your niece's husband, or your nephew, or your nephew in law, etc
Your niece would be your mothers granddaughter.
Your niece.Your brother's daughter would be your niece and you'd be her uncle or aunt. Your sister's daughter would also be your niece. If your sibling had a son, he would be your nephew.
Your husband's great niece is also your great-niece in law, so your great niece would be great niece in law to your husband.
A husband's niece is the daughter of his brother or sister. A wife's niece is the daughter of her brother or sister. In general, the two nieces are not related to each other.The only way the two nieces could be related would be if the husband and wife were related in some way in addition to their relationship through marriage, for example, if they were also cousins to each other.
Your husband's niece is also your niece.
May be it is possible in Muslims but not in Christian and I don't have awareness about the other religion
Your niece's daughter is your grand niece, or, as some would say, your great niece.
Your sister's daughter is your niece and you are her aunt (if you are a woman) or her uncle (if you are a man).