Tarja - Juan III and Catalina

Juan III and Catalina ruled Navarre jointly as co-sovereigns following their marriage in 1484, a constitutional arrangement that reflected the kingdom's determination to preserve its independence between the competing pressures of France and Castile. Their reign ended not through dynastic failure but through military force — Ferdinand of Aragon invaded in 1512 and annexed the kingdom outright, ending centuries of Navarrese sovereignty. Billon coinage of this reign is therefore bounded hard on both ends by political events rather than by any minting decision.