If your wife's son is also your son, then he is your brother's nephew and your brother is his uncle.
If your wife's son is a child from a previous, or subsequent marriage and is therefore not your son, he is not related to your brother unless you have adopted him. If you have adopted him, the relationship is the same as if he were your biological child.
Lorna O'Reilly
granddaughter
He is your nephew, and you are his uncle.
the son would be the nephew
Great uncle / Great nephew
Step-brothers
No because that would be your cousin
First cousins once removed.
She would be your "niece". If your brother had a son, he would be your "nephew".
Yes, she did. She had the relationship of a mother that a mother has with her son. As most mothers do.
Your younger brother's wife's sister's daughter would be your son's cousin.
i suppose so. if your a redneck...cousins are free game
Probably your niece-in-law.