This news builds on a literary mystery which I discussed in an earlier series about the poet Percy Bysshe Shelley.
The Journal of the Keats-Shelley Association for 2019, which came out this month, features an article by Donatella Sisti, which tells of her interesting discovery relating to the "Neapolitan Mystery." I used this mysterious episode in the life of poet Percy Bysshe Shelley in my novella and in my Mansfield Trilogy, so I was very excited to hear about this article and couldn't wait to read it! I assume that the full article is available only to subscribers to the Keats-Shelley journal, or to people with library access, but there is a link here.

She was christened "Elena Adelaide Shelley" and she was evidently placed with a working-class Neapolitan family. She didn't live with the Shelleys and they were not in Naples when she died.
An enterprising scholar and Shelley enthusiast, Donatella Sisti, searched the national archives of Naples to see if she could find anything that would shed further light on the mystery. She had the name of the midwife from the birth certificate and the names of some working-class Neapolitans who served as witnesses for the death certificate. Sisti searched for these names in the archives, including the police reports, of the time but found nothing.
She then turned to the actual neighbourhood where Elena Adelaide lived. Aware that Naples would have had church parish records in addition to government archives, Sisti located the relevant church archives for the area--and found the burial certificate of Elena Adelaide. Her burial was conducted by the priests of the Church of Santi Francesco e Matteo (St. Francis of Assisi). How exciting to uncover this long-hidden document! ...