Francis, Duke of Guise
The massacre of Vassy () was the murder of Huguenot worshippers and citizens in an armed action by troops of Francis, Duke of Guise, in Wassy, France, on 1 March 1562. The massacre is identified as the first major event in the French Wars of Religion. The series of battles that followed concluded in the signing of the Peace of Amboise (or Pacification Treaty of Amboise) the next year, on 19 March 1563.