Mrs. Otis asked the housekeeper Mrs. Umney about a red stain she saw, and Mrs. Umney revealed that it was blood from Lady Eleanore de Canterville who was murdered by her husband Sir Simon de Canterville in 1575. Four nights later, the Otis family buried Sir Simon's body among the trees. The ghost of Sir Simon had lived in Canterville Chase for 300 years and wanted to frighten the new Otis family, but Washington Otis said a product could remove the blood stain that remained as evidence of the murder.