Your sister-in-law's niece is not related to you because you have no ancestors in common.
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The above answer is true, but by marriage, that niece would also be your niece or your own daughter. This is because your spouse is blood/sibling related to his/her sister (your sister-in-law).
Your sister's daughter is your niece. Your niece's husband is not related to you.
Your sister-in-law's niece is not related to you because you have no ancestors in common. ----- The above answer is true, but by marriage, that niece would also be your niece or your own daughter. This is because your spouse is blood/sibling related to his/her sister (your sister-in-law).
Your sister's husband is your brother-in-law. His niece is a child of one of his siblings, and is also a niece of your sister by marriage. There is no relation to you.
Nothing, you are not related, unless the baby is your sister's baby as well, in which case they would be your niece or nephew.
Your husband's sister's child is your niece, and you are her aunt.
Well she,s not blood related to you. But she is related to you by marriage and she'syou niece in law.
Your sister-in-law's niece is not related to you because you have no ancestors in common. ----- The above answer is true, but by marriage, that niece would also be your niece or your own daughter. This is because your spouse is blood/sibling related to his/her sister (your sister-in-law).
Your brother's sister is your daughter's aunt, and your daughter is your brother's, and his sister's, niece.
It depends if your niece's or nephew's parent is your brother or sister.
If there is no surviving spouse or children, generally, the half sister. You can check the laws of intestacy for your state at the related question link provided below.
If your brother-in-law is your spouse's brother, then his sister's daughter is your spouse's niece, and your niece, too. If your brother-in-law is your sister's husband, then his sister is not related to you, and neither is her daughter.
Your mother's sister-in-law is either the wife of her brother (your uncle), or your father's sister (your aunt). The niece of your uncle's wife is not related to you, unless she is you, your sister, or a girl cousin who is the daughter of another of your mother's brothers or sisters. The niece of your father's sister is you, your sister, or the daughter of another of your father's brother's or sisters. If your father's sister is married, she may have nieces who are the daughters of her husband's brothers or sisters. Those nieces are not related to you.