High Quality Content by WIKIPEDIA articles! Joseph Leo Mankiewicz (February 11, 1909 – February 5, 1993) was a film director, screenwriter, and producer. Mankiewicz had a long Hollywood career and is best known as the writer-director of All About Eve (1950), which was nominated for 14 Academy Awards and won six. He was brother to screenwriter and drama critic Herman J. Mankiewicz who also won an Oscar for co-writing Citizen Kane (1941).