I just returned from a trip to Ireland, and had family in Killanne (a manyX great grandfather was the rector of the Protestant Church of Ireland church, St. Anne's, in Killanne), and I visited the cemetery there. The CofI church was apparently built adjacent to or over an earlier RC church at the site of the Holy Well of St. Anne, and the head of poor Mr. Kelly was allegedly smuggled back to the community by his sister.
There is a sign posted at the cemetery offering the assistance of local resident Gloria Binions with the e-mail address globin1798 at geemail dot com. Another resource I was just alerted to by a docent at a historical house was
https://www.duchas.ie/en, an online collection of documents that includes digitized items from the National Folklore Foundation. There's a 1937 recounting of Kelly's story that includes the names of several relatives, with other material. I'm sure it ought to be taken with a grain of salt (and additional research), but it's anecdotal info from an extant resident.
