Your brother would call your husbands sister by her first name. Or, "my (sibling's) sister in law.
brother in law
He is brother your brother in law.
Your sister's husband is your brother-in-law.
Sister-in-Law
Your uncles are the brothers of you mother or father, or the husbands of your parent's sisters.Your dad's sister-in-law could be the sister of his wife, your mother. In that case, her brother is also your mother's brother and is therefore your uncle.However, your dad's sister-in-law could be the wife of his brother. In that case, her brother is your dad's brother-in-law but is not related to you.
There is no common ancestor, so you aren't really related. Related by marriage is one way to describe the relationship.
No. An Uncle is the brother of either your Mother or Father. You're kids may call him 'uncle'
No he is not he is just a normal boy who has a famous sister.
Let's see if we can unravel this. Your sister's husband's father's brother is your sister's husband's uncle. The uncle's daughter is your sister's husband's cousin. There is no relationship to your sister, unless your sister wants to call her a cousin-in-law. To break it down to its simplest terms: She is your brother-in-law's cousin and no relationship to you.
sister in law
Your Sister-in-law