||We know of 9 events of note in literature and the arts that occurred on April 18:
- Elizabethan playwright Thomas Middleton, author of the bizarre play The Changeling, with collaborator Rowley, was born on this day in 1580.
- English author George Henry Lewes, the de facto husband of George Eliot, was born on this day in 1817. His wife had a child by Thornton Hunt, Leigh Hunt's son.
- Estelle Oldham, William Faulkner's childhood sweetheart, married Dr. Cornell Franklin on this day in 1918. She would move with him to China, but she soon divorced him and married Faulkner.
- German reformer Martin Luther, at the Diet of Worms, proclaimed that a Biblical foundation supported the theological position of his "Ninety-Five Theses. "Luther ended his defense with the famous words: "Here I stand! I can do nothing else! God help me! Amen."
- On this day in 1834, William Lamb, Lord Melbourne, became prime minister of Britain. His late wife was Lady Caroline Lamb, Byron's most famous mistress.
- On this day in 1924, Simon and Schuster published the first crossword puzzle book.
- On this day in 1958, treason charges against American poet Ezra Pound were dropped and he was released from a Washington, D.C. mental hospital. He and his wife sailed for Italy July 1.
- On this day in 1964, playwright Ben Hecht died at 71.
- Shakespeare's poem Venus and Adonis was entered into the Stationer's Register on this day in 1593.