Dirk Edward Ziff

Dirk Edward Ziff is an American businessman. He is a billionaire and the eldest son of publishing magnate William Bernard Ziff, Jr. He and his two brothers inherited the family fortune in 1994.

Dirk was born in 1965. His mother was Barbara Ingrid Beitz, an ethnic German whose parents were declared as Righteous among the Nations for providing refuge and risking their lives to save Jews during World War II. His father was the Jewish American media magnate William Ziff Jr. , who had built the ZiffDavis magazine empire that included titles such as Popular Aviation, PC Magazine, and Car and Driver.

Source: Wikipedia