Siegfried Unseld was born on September 28, 1924 in Ulm, Baden-Württemberg, Germany. He was a writer, known for Der Briefwechsel (2010), Die Wahrheit ist dem Menschen zumutbar (1974) and Das Profil (1962). He was married to Ulla Berkévicz and Hildegard Schmid. He died on September 26, 2002 in Frankfurt am Main, Hesse, Germany.