As I said more than once, on different sites, Eric Stanislaus Stenbock (1860-1895) is author of a vampire story, one of the only two which I appreciate. Talking of turnskin stories, I have to say that Stenbock’s story “The Other Side: A Breton Legend” (1893) is one of my two of choice as well. Literature is a matter of taste. Read the story here:
https://onedrive.live.com/view.aspx?cid=ac0c01aafd56c514&page=view&resid=AC0C01AAFD56C514!440&parId=AC0C01AAFD56C514!139&app=Word
The other story of a turnskin is “Lokis” (1869) by Prosper Mérimée (1803-1870). Set in Lithuania, it is the horror story of a man who seems to be half bear and half man. Plot (Wiki): It is set in rural Lithuania. The plot revolves around a young man who is suspected to be half-human half-bear, since he was born after his mother was mauled (and, as believed by peasants, raped) by a bear. The title is a misspelling of Lithuanian lokys for “bear”. As such, the plot may be classified into a werewolf theme. Through the novel, the protagonist, Michel/Lokis, manifests signs of animal-like behavior until he finally kills his bride by a bite to her throat and runs away into the forest on his wedding night. The screen version of the story see here:
https://www.youtube.com/watch?v=HP-Ctpy9fQI
One of nicest and poetic movies I ever saw. I appreciate it with the careful attitude towards literature and theme.The movie on Horrorpedia:
https://horrorpedia.com/2013/12/16/lokis-aka-lokis-rekopis-profesora-wittembacha/
My “Extraordinary Story of a Turnskin” is available here:

https://www.smashwords.com/books/view/259119