From Wikipedia, the free encyclopedia. Hubert Cornfield (February 9, 1929 — June 18, 2006) was a film director in Hollywood. He was born in Istanbul, Turkey and died in Los Angeles, California. Billy Wilder, William Wyler and Joseph L. Mankiewicz all signed his Directors Guild of America (DGA) application. Description above from the Wikipedia article Hubert Cornfield, licensed under CC-BY-SA,full list of contributors on Wikipedia.