In this reworked letter, Voltaire recounts to his niece an amusing anecdote in which the marquis de Montperny, chambellan of the margravine of Bareith, mistakes a priest for an apothecary. Voltaire’s secretary of the time, Ponce-Simon Tinois, wrote verses about the episode, which circulated in September 1750 and were attributed to Voltaire (Vers de l’illustre Voltaire sur le cul d’un chambellan de Bayreuth).