Morely Roberts
From Jenny Everywhere Wiki
In one universe, upon discovering that the Jenny Over-There/John Watson conversation they had written matched the contents of a book of actual lost fiction by Arthur Conan Doyle which had not yet been discovered when they wrote it, Callum Phillpott wondered if this was “a situation similar to the classic Morely Roberts story The Anticipator”. (PROSE: Annals of the Jen: One Year of Jenny Over-There: The Birthday Toaster: Notes)