The Real War of Thrones: The Wars of Religion | Blood Wedding 1567-1574 (S02 - E04)

Episode 4: In the name of religious tolerance, Catherine de Medici weds her Catholic daughter, Margaret of Valois, to the young Protestant heir of the Bourbon dynasty, Henry of Navarre. Protestants and Catholics are both in attendance. This event leads to the most infamous bloodbath in France's history.