Your borther-in-law's children are your nieces and nephews. You are their uncle or aunt, as is your spouse.
They would be your great nephews and nieces.
Nephews and nieces
They are first cousins.
nephew
Nephew
Nephews and nieces
"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.
There is 2 answers your mothers brothers children or your dads sister;"s children
they were brothers !!
The brothers of your husband are your brothers-in-law.
No, they are of no relation.
No relation.
step brothers
theyre brothers
They are brothers
If you like. You have no blood relation.
step brothers