Stepson; Son in law; Brother?
Your mother's son is your brother or your half brother.
She is your third cousin.
Do something nice for next mothers day
Your mother's aunt's son is her first cousin and your first cousin, once removed.
Yes, she did. She had the relationship of a mother that a mother has with her son. As most mothers do.
Name your mom's uncle's son with something that means something to you or your family.
baby bash is his dad
Your sister's son is your nephew.
yes but hornswoggle as is mothers last name
Grandaughter.
Nephew
Your son's wife is your daughter-in-law. Her brother is your son's brother-in-law, but the English language has no word for a relationship between you and him. You are not considered to be related to him.