Answer:
One reason why this is believable is because di Coppo Di Stefano Buonaiuti was in Florence at the time when the Black Death hit Florence in 1338. One reason why this passage isn't believable is because he was only two when it happened so might not remember it all.
He was watching “ our american cousin” performed by laura keene at the ford theatre on april 14th
The infamous Salem witch trials began during the spring of 1692, after a group of young girls in Salem Village, Massachusetts, claimed to be possessed by the devil and accused several local women of witchcraft. ... By September 1692, the hysteria had begun to abate and public opinion turned against the trials.