Mary Shelley’s favorite keepsake was her dead husband and poet Percy Shelly’s heart. After the death of her husband, the Frankenstein author carried his heart with her in a silken shroud for almost 30 years until she died in 1851. – WTF Fun Facts
Source: https://www.mentalfloss.com/article/65624/mary-shelleys-favorite-keepsake-her-dead-husbands-heart
