Discontent following the Peace of Beaulieu (1576) by which the Protestants gained important concessions from Henry III led to the formation of the Holy League, an alliance of nobles, clergy, and people under Henry of Guise in 1576 to defend the Catholic religion in France, and to restore the ancient rights and liberties. Supported by Catherine de' Medici, Philip of Spain, Pope Gregory XIII, and led by King Henry III, it was finally disbanded in 1595 after the conversion of Henry IV.