 While a student at Harvard, Marston sold his first script, "The Thief", to filmmaker Alice Guy-Blaché, who directed the film in 1913.After teaching at American University in Washington, D.C., and Tufts University in Medford, Massachusetts, Marston traveled to Universal Studios in California in 1929, where he spent a year as Director of Public Services and taught at the University of Southern California.Marston had two children each with both his wife Elizabeth Holloway Marston and partner Olive Byrne.