Navarre–Aragon Conflict

Timeline

1. 1228Jaca and the Pyrenean valleys · JacaAfter consolidating Aragonese royal authority, James I clashed again with Navarre's Sancho VII around Jaca and the traditionally disputed Ribagorza region. Their claims to border castles and passage rights conflicted, diplomatic negotiations broke down, and military standoff escalated.
2. 1228Navarre's southern frontier · NavarreRaiding and small-scale skirmishes occurred along the southern Pyrenean frontier. Aragon sought to consolidate control of strategic passes, while Navarre counterattacked to preserve the integrity of its southern lands. The fighting was limited in scale but forced James I to postpone some of his external expedition plans.
3. 1228–1229Alcañiz · Teruel ProvinceWith mediation by the Church and nobles, negotiations were held at Alcañiz and elsewhere, reaching a temporary truce and partial territorial arrangements that paved the way for the formal 1229 treaty. The Navarre–Aragon conflict temporarily subsided, and James I was free to prepare the Mallorca expedition.