You can just say, "YOU CAN'T MARRY HIM!!!"
No.
Your niece's child is your great niece if she is a girl, or your great nephew if he is a boy.
No
niece
"Don't marry me because God told you to, do it because you love me."
In most places, it is not legally permissible to marry your niece. Laws vary by location, so it is important to check the specific laws in your area.
If you marry your girlfriend, you niece (daughter of your brother or sister) will continue to be your niece and will also be considered by most to be your new wife's niece. Your new wife will be her aunt, as you are already her uncle.
He could not find another wife.
If your brother or sister has a kid then you have a nephew or niece depending on whether its a girl or boy. Nephew = boy Niece = girl I Hope I helped!
niece, they rest are male terms
Tell them you are not ready for a relationship without commitment.
The niece could be the daughter of the sister-in-law's sibling and not related to you, so you could marry her. However, the niece could also be your mother or your aunt, in which case you could not marry her. Erm, but whover readwhat this guy just wrote, I expect you're wondering WHY WOULD YOU EVEN BOTHER? DON'T YOU HAVE ANYTHING BETTER TO DO??