The Huguenot rebellions, sometimes called the Rohan Wars after the Huguenot leader Henri de Rohan, were an event of the 1620s in which French Protestants (Huguenots), mainly located in southwestern France, revolted against royal authority. The uprising occurred a decade following the death of Henry IV, who, himself originally a Huguenot before converting to Catholicism, had protected Protestants through the Edict of Nantes. His successor Louis XIII, under the regency of his Italian Catholic mother Marie de' Medici, became more intolerant of Protestantism. The Huguenots tried to respond by defending themselves, establishing independent political and military structures, establishing diplomatic contacts with foreign powers, and openly revolting against central power. The Huguenot rebellions came after two decades of internal peace under Henry IV, following the intermittent French Wars of Religion of 1562–98.
The first Huguenot rebellion was triggered by the re-establishment of Catholic rights in Huguenot Béarn by Louis XIII in 1617, and the military annexation of Béarn to France in 1620, with the occupation of Pau in October 1620. The government was replaced by a French-style parliament in which only Catholics could sit.
Feeling their survival was at stake, the Huguenots gathered in La Rochelle on 25 December 1620. At this Huguenot General Assembly in La Rochelle the decision was taken to forcefully resist the Royal threat, and to establish a "state within the state", with an independent military commandment and independent taxes, under the direction of the Duc de Rohan, an ardent proponent of open conflict with the King. In that period, the Huguenots were very defiant of the Crown, displaying intentions to become independent on the model of the Dutch Republic: "If the citizens, abandoned to their guidance, were threatened in their rights and creeds, they would imitate the Dutch in their resistance to Spain, and defy all the power of the monarchy to reduce them." (Mercure de France)