Hélas, Je me suis Transfiguré Les Pieds ("Alas, I've Transfigured My Feet") is a play written by the French wizard, Malecrit in the early 1400s. It featured the characters of Grenouille and Crapaud, and featured an early reference to Quidditch, showing how the game had spread to Europe.
Grenouille: "I cannot go with you to the market today, Crapaud."
Crapaud: "But Grenouille, I cannot carry the cow alone."
Grenouille: "You know, Crapaud, that I am to be Keeper this morning. Who will stop the Quaffle if I do not?"
— Extract from Hélas, Je me suis Transfiguré Les Pieds[src]