In 1346, a particularly virulent form of the bubonic plague, known as the Black Death, arrived in Europe. In subsequent years, according to some estimates, it killed off something like 60% of the continent's population.
Did it also spark a pagan revival?
So says journalist Gavin Ehringer in his 2017 Leaving the Wild: The Unnatural History of Dogs, Cats, Cows, and Horses:
...[T]he Black Death caused many people in Europe to lose faith in the Christian god and the Catholic Church. (Many astute people observed that Rome had been better off during the management of of its myriad gods and goddesses than under the Christian God.) So, ironically, paganism made a comeback in some regions....Liberated from Christian thought, people also turned to the study of ancient Greek and Roman culture, which helped kick-start the Renaissance (145).
Well, now. A compelling tale, to be sure, especially for Latter-Day pagans like us, one with a very real ring of likelihood to it.
Consider. Six out of every ten people that you know have died miserably. Clearly, the Church has got something wrong. You remember those old stories that grandma used to tell. Well, the new god's not working. Maybe we should give the old ones another try.
So on Beltane you go out to the woods and light a fire. Out of old, half-remembered bits of folklore, and snippets of things you've heard in church, you cobble together a new paganism for yourself.
You get a little drunk, you dance, you have some sex. In a time otherwise notably lacking in good times, you have a good time.
So Midsummer's Eve, you go out and do it again.
What could be more likely? Who could doubt that it happened, spontaneously, again and again, all over the continent?
A good story, certainly. But is it historical?