The Principality of Bidache was from 1570 to 1793 a small feudal state in the south west of modern-day France. The sovereignty of Bidache was proclaimed by Count Antoine de Gramont in 1570. The counts of Gramont had formerly been vassals of the King of Navarre however they had last paid tribute in 1434 and considered themselves relieved of their fealty. The principality maintained de jure sovereignty until 1790 when by royal edict the territory of the principality was declared to be a part of France by Louis XVI. In 1793 the principality was occupied by troops loyal to the First French Republic and the last reigning prince, Antoine VII, was ousted. The royal and noble Gramont dynasty survives to the present day.