Your husband's sister's son is your nephew, just as your sister's son is your nephew.
Well, it depends how close you are to your husbands family. If you really want to know they are cousins-in-law.
your second nephew
cousin
Your father's sister is your aunt and her son is your first cousin.
Your sister's son is your nephew His sons are your grandnephews, and his daughters are your grandnieces.
Your sister's son is her grandson and your great nephew. Some use the term "grand nephew."
Your sister's son is your nephew His sons are your grandnephews, and his daughters are your grandnieces.
Your sister's son is your nephew.
Your sister's son is her grandson and your great nephew. Some use the term "grand nephew."
Yes, because your daughters are sisters and since their husbands are your son in law's that would make them brother in laws.PS. I hope your daughters are veryhappy, congrats!! :) ,,Chameleon5,
If your niece's is by your sister but the brother is by your sisters new husband & another woman there would be no blood relation. If not then he's the nephew
Publius.