Jack Wilton Marshall was an American jazz guitarist, composer, arranger, and record producer. He was married to Eva Katherine Pellegrini, and the father to four children, three sons, producer/director Frank Marshall, composer Phil Marshall, Matt Marshall, and a daughter, Sally Marshall. Jack is also the cousin of classical guitarist Christopher Parkening.

Frank Wilton Marshall is an American film producer and director. He often collaborates with his wife, film producer Kathleen Kennedy, with whom he founded the production company Amblin Entertainment, along with Steven Spielberg. In 1991, he founded, with Kennedy, The Kennedy/Marshall Company, a film production company. Since May 2012, with Kennedy taking on the role of President of Lucasfilm, Marshall has been Kennedy/Marshall's sole principal.