Sigmund's daughter is ANNA, a four-letter name. ANNA is the daughter of Sigmund Freud, the famous Austrian neurologist and the founder of psychoanalysis. She was born in 1895 and was the youngest of six children. She was an accomplished writer and editor, and she wrote several books about her father's life and work. She also wrote a biography of her mother, Martha Bernays Freud. ANNA was a psychoanalyst herself and was influential in the development of child psychology.