The daughter of your husband's brother is your niece.
Uncle
Your brother's daughters are your nieces
Your grand daughter's husband is your grandson-in-law.
would it be a brother in law? not sure about this one! Is it your husband/wifes daughters brother?
would it be a brother in law? not sure about this one! Is it your husband/wifes daughters brother?
Your daughters husband is you son-in-law.
4 daughters, 3 sons.
Your mother's sister is your aunt and her husband is your uncle. If he has no brothers, his sister-in-law must be either your mother or another one of your mother's sisters (your aunt)
The brothers of your husband are your brothers-in-law.
Mary Lee Cantwell's husband was literary agent Robert Lescher. They had two daughters - Katherine and Margaret.
Your brother's daughters are your nieces
Your daughter's sister-in-law is either the sister of your daughter's husband or the wife of one of her brothers. If your daughter's sister-in-law is the wife of one of her brothers, then you would refer to her as your daughter-in-law since she is married to one of your sons. On the other hand the English language has no special term for the relationship between you and the sister of your daughter's husband. If you need something, you will have to call her your "daughter's sister-in-law" or your "son-in-law's sister." Perhaps your daughter has a half-brother who isn't your son, but whose wife is still your daughter's sister-in-law. In that case, this woman is not directly related to you. Not everyone likes to make such distinctions, and perhaps you could consider her to be an honorary daughter-in-law of yours, in the interests of friendship.