April 19: edit
- 1012 - Martyrdom of St. Alphege in Greenwich, London.
- 1529 - At the Diet of Speyer, a group of rulers (German: Fürst) and independent cities (German: Reichsstadt) protests the reinstatement of the Edict of Worms, beginning the Protestant movement.
- 1692 - Bridget Bishop goes on trial in Salem, Massachusetts for witchcraft.