Chinatown
Incest
You are cousins
The offspring of your first cousin is your first cousin once removed.
She is your niece, you are her aunt or uncle.
Father and daughter.
That depends on how old the daughter is. If she's a minor - that makes him a paedophile. If she's an adult - that makes him incestuous.
Antigone is a daughter of the accidentally incestuous marriage between King Oedipus of Thebes and his mother Jocasta.
The marriages you describe are incestuous; the offspring of incest are called inbred.
I'm no breeder, but I'm guessing that incestuous breeding is not a good idea. Would you want to have a kid with your daughter?
Your brother's daughter has a daughter? That is a great niece.
It's a kind of rambling story about Pericles, the Prince of Tyre, who exposes an incestuous relationship between a man and his daughter, wins a wife in a jousting competition, then loses her in a shipwreck, has a daughter, places her with some supposedly trustworthy people who sell her to a brothel, and finally just when he feels totally depressed becomes reunited with both wife and daughter. Yeah, there's a reason you don't see it on stage very often.
Your daughter's daughter is your granddaughter, and you would be her grandmother or grandfather.
Your sister's daughter is your niece.
Cousins
aphrodite was in a relationship with are they had 1 daughter.
Your daughter's son is your other daughter's nephew and she is his aunt.
2nd cousin.