A royal wedding designed to end a religious war triggered history's most notorious religious massacre.

St. Bartholomew's Day: When Christian France Ate Itself

A royal wedding celebration turns into a massacre of tens of thousands

What began as targeted killings of Protestant leaders after a royal wedding in 1572 became a nationwide massacre of up to 30,000 French Huguenots over several weeks.

The violence began at dawn on August 24, 1572 — St. Bartholomew's Day — with the tolling of church bells in Paris. Within hours, the streets of the French capital ran with blood. The massacre of the Huguenots (French Protestants) by Catholic mobs and royal soldiers would continue for weeks, spreading from Paris to the provinces and killing between 5,000 and 30,000 people.

The context was a royal wedding: Protestant leader Henry of Navarre had married Catholic Princess Margaret of Valois just six days earlier, a marriage designed to reconcile France's warring religious factions. Instead, it had brought the leading Huguenot nobles to Paris — where they made convenient targets.

Catharine de' Medici, the Queen Mother, convinced the young King Charles IX that the Huguenot leader Gaspard de Coligny was plotting against the crown. The king ordered Coligny's assassination. When the attempt failed and Coligny survived wounded, the decision was made to eliminate all the Huguenot leaders who had gathered for the wedding.

The planned political murder spiraled out of control as Parisian crowds — fed decades of religious hatred — began killing any Protestants they could find. Bodies were thro…

💡 Henry of Navarre survived by converting to Catholicism — then converting back to Protestantism — then converting to Catholicism again to become King Henry IV of France, who eventually granted Protestants religious freedom.