Your father's sister is your aunt and her son is your first cousin.
You are each others cousins.
cousin
Second cousins once removed.
Your sister's son is your nephew His sons are your grandnephews, and his daughters are your grandnieces.
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
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 her grandson and your great nephew. Some use the term "grand nephew."
niece/nephew
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
Joyce Hawkins is his moms' name, Clinton Brown is his dads' name, and his sisters' name is Lyndell Bundy.