From the flight of Rome to the banks of the Caia
The white walls and military pride of Arronches, in Alto Alentejo, preserve in oral tradition a colorful origin story that dates back to Classical Antiquity. According to local monographs published in 2017, the mythical foundation of the town is attributed to the year 39 of the Christian era by a Roman noble named Licinius Balbus. The patrician would have been forced to leave the capital of the empire after an unusual episode starring the emperor Caligula, who ordered senators to dine at a formal banquet alongside his favorite horse, the famous animal Incitatus.
Popular narrative shaped this aristocratic getaway as the first foundation of the borderland locality, giving it an imperial founding status that echoes in the conversations of the elders. The transitional landscape between the Caia river and the Arronches stream served as the stage for this mythological transposition of Roman heroes to Alentejo soil. However, crossing this legend with historiographical reality requires abandoning Caligula's whims to dive into the rigorous records of medieval chanceries and the region's archaeological remains.
Far from the Roman imperial palaces, the subsoil and stone of the region tell a much older and more material story through the Esperança Rock Art Complex. This archaeological nucleus has been the target of multi-year scientific projects developed in coordination with the University of Évora and the local municipality, seeking to inventory and safeguard marks much earlier than the mythical foundation of Licinius Balbus. The excavations and studies feature the pioneering contribution of international figures such as Abbé Henri Breuil, who examined these prehistoric stations in the early 20th century.
The shadow of the Moorish woman and the monarch's charter
Alongside the Roman foundation, the collective imagination of Arronches was enriched with legendary figures linked to the Muslim period, notably the legend of the 'Moorish Stone' (Pedra da Moura). According to records from the Alto Alentejo Archive from 2010, this supernatural figure inhabits the hydrological transition area between the Caia river and the Arronches stream, personifying a Moorish princess turned to stone for rejecting a forced marriage by her father. On Saint John's nights, according to the same oral tradition cataloged by social solidarity associations in 2005, the figure manifests by chanting lamentations, a phenomenon avoided by the local population due to ancestral restrictions and taboos.
In contrast to these legendary presences, documentary facts recorded by the Municipality of Arronches in 2022 establish that the definitive reconquest of the town from the Moors took place in 1242, at the hands of D. Paio Peres Correia. The chronological leap from the Roman foundation myths is evident, distancing the legend from the military reality of the Reconquista. As early as 1255, D. Afonso III granted the first charter to the town, establishing the medieval legal basis for the administrative consolidation of this borderland territory that today borders the Portalegre district and the Spanish border.
The consolidation of royal power quickly translated into stone and parchment throughout the 13th century and beyond. The initial charter was later confirmed in 1272 by the same monarch, and later renewed by D. Manuel I in 1512, as part of the vast general reform of the kingdom's charters. In terms of documented military infrastructure, the town's castle underwent improvement and restoration works ordered by D. Dinis in the year 1310, guaranteeing the defense of a stronghold that would assume enormous geopolitical importance on the border.
Between the myth of the sword and the rigor of the archive
The most obvious reading of common sense would tend to assume that the legends of Roman foundation and the narratives of enchanted Moorish women in Arronches have a direct correspondence in the official chronological records of the medieval royal chanceries. However, documentary facts prove that the transition from Muslim to Christian rule occurred abruptly and is documented only in the mid-13th century, between 1242 and 1255, distancing the foundational myths created by oral tradition from administrative evidence and the charters granted to the town.
The loss of a large part of Arronches' municipal historical archive over the centuries, documented by studies published in a university repository in 2020, left deep gaps that were partially filled by ecclesiastical records of baptisms, marriages, and deaths kept in the District Archive of Setúbal and in Misericórdia funds. This local documentary scarcity intensified reliance on oral tradition to explain the genesis of the land, generating parallel narratives that historians today can precisely separate from royal diplomas.
Despite documentary erosion, Arronches achieved very rare legal privileges in the national panorama that are unequivocally recorded in the archives. In 1678, the municipality obtained from D. Pedro II the grant of a 'brand-new charter' (foral novíssimo), an exceptional status granted to a very restricted number of Portuguese localities to reward loyalty and war effort in defending the border.
The strong garrison town and the land of pigs
The strategic importance of Arronches far surpassed local borders, even earning the immortal applause of national literature. The chronicler and king of Os Lusíadas, Luís de Camões, consecrated prominent epithets to the locality in his poetic stanzas, explicitly referring to 'strong Arronches' due to the robustness of its military stronghold and the bravery of its defenders against Castilian assaults.
This political and military centrality was underscored in the year 1475, when historical records prove that D. Afonso V chose Arronches to gather royal Cortes with the central objective of debating his marriage to the Spanish princess D. Joana. In a municipality where crowned matrimonial alliances were decided, popular culture simultaneously knew how to preserve picturesque nicknames that survive in regional slang.
Popular toponymy and slang informally designate Arronches as the 'Land of Pigs' (Terra dos Porcos), a nickname based, according to the municipality in 2022, on a pastoral legend about the autonomy and loyalty of the local swine and pigs. The popular narrative argues that the animals returned alone to the sties without the need for human guidance, reflecting the symbiosis between rural Alentejo man and traditional livestock management.
The echo of the walls in today's landscape
Walking through the streets of Arronches today is to constantly stumble upon these two overlapping layers of time: on one side, the documentary weight of the walls erected by D. Dinis in 1310 and the privileges of 1678; on the other, the distant echo of the Moorish women crying by the stream on Saint John's nights and the playful memory of the 'Land of Pigs'. In the regional survey of Alentejo oral literature published by Diário do Alentejo in 2019, 47 main legends were cataloged for all the municipalities in the region, mapping thematic variations where Arronches occupies a singular place due to the persistence of its foundation myths.
While archaeological excavations coordinated with the University of Évora continue to scrutinize the Esperança Rock Art Complex beyond the mythical romanization of Licinius Balbus, the built heritage resists time. The marks of the 1475 Cortes convened by D. Afonso V blend into the urban fabric with the heritage of the Manueline charters and with the military layout that inspired Camões to sing of the border fortress.
The separation between the legend of fleeing Caligula's horse and the reality of the 1242 reconquest by D. Paio Peres Correia does not impoverish the municipality; quite the contrary, it gives it the depth of a territory that knew how to invent myths to explain the harshness of its survival on the border and keep the cunning of its secular charters in the archives.