The DeAutremont Brothers, Roy (March 30, 1900 – June 17, 1983), Ray (March 30, 1900 – December 20, 1984) and Hugh DeAutremont (February 21, 1904– March 30, 1959), were a criminal gang based in Pacific Northwest during the 1920s. Their unsuccessful robbery of Southern Pacific Railroad express train and the murder of four crew members, known as the Siskiyou massacre, was subject to one of the largest and most extensive investigations in the region.