If your father is someone's uncle, then that person is your first cousin.
Your father's brother is your uncle.
Your fathers brother is your uncle.
Your wife's brother is your brother-in-law.
uncle
uncle
Your Step-brother. If he isn't your brother but he is your father's son, he's you.
aunt
cousin
uncle.
No, legally she is your brother in-law's wife.
Yes.
Great Uncle.