The "Queen of Navarre" typically refers to Joan III of Navarre, who ruled from 1512 to 1555. She was a member of the House of Foix and played a significant role in the political landscape of Navarre, a region located in both modern-day Spain and France. Her reign was marked by the challenges of maintaining her kingdom's independence amid the pressures from neighboring powers. Another notable figure is Catherine de' Medici, who was also associated with the title through her marriage to Henry II of France, the King of Navarre. The title has historical significance, representing the complex interplay of royal families and territorial claims in Europe during the Renaissance period.