Your sister-in-law in your son's aunt and he is her nephew.
a cow
If her son is from a previous relationship, then he would be your step-son.
A father and son relationship is called a paternal relationship.
your son and your brother's son will be cousins
your son and your brother's son will be cousins
your son and your brother's son will be cousins
your son is your great grandsons grandfather.
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.
You sister-in-law is your son's aunt. the relationship consider age diff.if she is lower age what is his relationship.
your son is your brother's nephew, and your brother is your son's uncle
He would be your son's third cousin.
Youre his son.