This movie is based on the Newbery Award winning book "Island of the Blue Dolphins" by Scott O'Dell. The book was based on the true story of a woman left behind on the Channel Islands by missionaries in the early 1800s. She lived alone on one of the islands for eighteen years and died of dysentery seven weeks after she was rescued and brought to the mainland. She is buried in the graveyard of the Santa Barbara Mission in California.
The Chumash tribe (not the principles) were played by the Manchester and Kashia tribes of the Pomo nation.
Even when Celia Kaye wasn't before the cameras, her canine companion Junior, son of Spike (a.k.a. Old Yeller), who played Rontu, refused to let her out his sight.