by H.P. Lovecraft
"The Alchemist" is a short story by H.P. Lovecraft, written in 1908, when Lovecraft was 17 or 18, and first published in the November 1916 issue of the United Amateur.
The story is recounted by the protagonist, Count Antoine de C-, in the first person. Hundreds of years ago, Antoine's noble ancestor was responsible for the death of a dark wizard, Michel Mauvais. The wizard's son, Charles le Sorcier, swore revenge on not only him but all his descendants, cursing them to die on reaching the age of 32.