It's about time to explain my entry,
St. Nicholas in a Pickle: A Confession.
The inspiration was the
legend of the pickled boys, in which St Nicholas on discovering that a butcher had killed and pickled three boys, restored them to life. (I encountered this tale many years ago, when our school choir sang Benjamin Britten's St Nicholas Cantata, which includes a section about this mythical incident.)
With a slightly wider genre, I would have gone with St Nicholas being a precursor of Victor Frankenstein (given that the boys were not whole when they were pickled and so needed putting back together). However, the three boys could certainly be the original undead and, as they must have been exsanguinated during butchering and pickling, they had a reason to obtain human blood.
That left only the problem of a saint creating vampires. Without the benefit of mail or email (communication methods that use addresses), all poor St Nicholas had recourse to was prayer. Sadly for him (and the boys), the Devil heard and responded, turning the pickled boys into three undead (for his own nefarious reasons, plus his own evilness) and forcing St Nicholas to provide a cover story for their activities.
However, because the Devil had tricked St Nicholas (not to mention the boys), and also impersonated God, his fee couldn't be unconditional. (Nor could it be waived: he had restored some sort of life to those boys.) St Nicholas achieved what he could: restricting the activities of the undead to one night a year, when they replace their vinegar-tainted blood with the fresh stuff.
Even so, St Nicholas feels the need to confess: because of his grandstanding (a mere human - not, though, a were human
- bringing the dead back to life) many have been killed over the centuries; not to mention many good boys and girls getting no presents.