Your borther-in-law's children are your nieces and nephews. You are their uncle or aunt, as is your spouse.
Nephews and nieces
There is 2 answers your mothers brothers children or your dads sister;"s children
"Relative" refers to something considered in relation to something else, such as a family member. "Relation" refers to the way in which two or more things are connected or in a particular type of association with each other.
they were brothers !!
The brothers of your husband are your brothers-in-law.
No relation.
No, they are of no relation.
step brothers
theyre brothers
If you like. You have no blood relation.
step brothers
Niece