Notable as a founding member of the American Jewish Committee and a director of the National Association for the Advancement of Colored People, this civil rights attorney and activist is also remembered for representing convicted murderer Leo Frank in a United States Supreme Court appeal.
After apprenticing with attorney Nathaniel B. Smith, he studied briefly at Columbia University and began working for a Syracuse-based law firm.
A conservationist as well as an attorney and human rights advocate, Marshall helped establish the New York State College of Forestry.
The child of German-Jewish immigrants, he grew up in Syracuse, New York. His marriage to Florence Lowenstein resulted in children named James, Ruth, Bob, and George.
His son, Bob Marshall, had a prominent career as a conservationist and author.