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Edith Vonnegut was born in 1949.
Edie Vonnegut's birth name is Edith Vonnegut.
Kurt Vonnegut is his full name. He had no middle name.
Yes, Kurt Vonnegut had a nephew named Kurt Vonnegut IV, who is also a writer. He is the son of Kurt Vonnegut's brother Bernard Vonnegut.
Nanny Vonnegut's birth name is Nanette Vonnegut.