Marie-Angélique Memmie Le Blanc's Bracelet

Origin
Marie-Angélique Memmie Le Blanc was a famous feral child of the 18th century in France who was known as The Wild Girl of Champagne, The Maid of Châlons, or The Wild Child of Songy.

Evidence suggests that Marie-Angélique had survived for ten years living wild in the forests of France, between the ages of nine and 19, before she was captured by villagers in Songy in Champagne in September 1731. She had been born in 1712 as a Native American of the Meskwaki (or "Fox") people in what today is the Midwestern U.S. state of Wisconsin and that she died in Paris in 1775, aged 63. She learned to read and write as an adult, thus making her unique among feral children.

Effects
When worn, the bracelet transfers behavioral standards. Ill-behaved individuals will gradually become more civilized and even-tempered and can be made into perfectly functioning members of society. Removing the bracelet will cause the effects to slowly degrade to a worse and worse state, leaving the affected almost feral and animistic.