St. Bartholomew's Day massacre St. Bartholomew's Day massacre The St. Bartholomew's Day massacre () in 1572 was a targeted group of assassinations and a wave of Catholic mob violence, directed against the Huguenots (French Calvinist Protestants) during the French Wars of Religion. Traditionally believed to have been instigated by Queen Catherine de' Medici, the mother of King Charles IX, the massacre took place a few days after the wedding day (18 August) of the king's sister Margaret to the Protestant Henry III of Navarre (the future Henry IV of France). Many of the most wealthy and prominent Huguenots had gathered in largely Catholic Paris
Paris in the 16th century Paris is estimated by modern historians to have been about 250,000 at the beginning of the 16th century, growing to 350,000 by 1550, then dropping down to 300,000 by the end of the century, due to the plague epidemic of 1580, and the long siege of the city during the Wars of Religion. The area of the city covered about 439 hectares within the city walls. Several new neighborhoods, formally rural, were populated over the course of the century, notably the Faubourgs Saint-Honoré, Saint-Martin, and Montmartre. Despite efforts of the government to keep the area outside of the walls clear