Sergio Leone: Sergio Leone. Writer: Once Upon a Time in America. Sergio Leone was virtually born into the cinema - he was the son of Roberto Roberti (A.K.A. Vincenzo Leone), one of Italy's cinema pioneers, and actress Bice Valerian. Leone entered films in his late teens, working as an assistant director to both Italian directors and U.S. directors working in Italy (usually making Biblical and Roman epics, much in vogue at the...
