<P> David and Jonathan, sworn friends and confidants, became brothers - in - law when David married Jonathan's sister Michal . </P> <P> One's sibling - in - law is one's spouse's sibling, or one's sibling's spouse, or ones's spouse's sibling's spouse . By gender, this is specified as brother - in - law for one's spouse's brother, one's sibling's husband, or one's spouse's sibling's husband, and sister - in - law for the one's spouse's sister, one's sibling's wife, or one's spouse's sibling's wife . </P> <P> Just like other affines, or "in - laws", siblings - in - law are related by a type of kinship called affinity . Just like the children of one's siblings, the children of one's siblings - in - law are called simply nieces and nephews--if necessary, specified whether "by marriage", as opposed to "by blood" or "by adoption". </P> <P> One study, examining the issue of envy in the triadic system of sibling, sibling - in - law and spouse, concluded that "The sibling - in - law relationship shared similarities with both spousal and sibling relationships" and that "Relational closeness and satisfaction for all relationships in the triad were correlated ." </P>

Who is your sister inlaws daughter to you
find me the text answering this question