The Hermandad General de Andalucía ("general brotherhood of Andalusia"), was a regional confederation of various jurisdictions in Andalusia, the southern region of the Crown of Castile, existing since 1295 or 1297 and reaching its peak power between 1312 and 1325. [1] [2] It was formed by the towns of Seville, Cordoba, Ecija, and Jerez, on the frontiers with the Emirate of Granada, after the accession of the nine-year old Ferdinand IV ( r. 1295–1312). The town acted to form the confederation because they felt that rule of the young king left them vulnerable to raids from Granada or North Africa. [1] It gradually became irrelevant when Ferdinand came of age, [2] but was revived after the accession of Ferdinand's one-year-old son Alfonso XI (r. 1312–1350). The hermandad met in Palma del Río in May 1313, raising funds for the regional defense and enacting a series of articles. After the death of the king's regents Infante Peter and Infante John at the Battle of the Vega of Granada (1319), the hermandad assumed more sovereign-like powers. In the same year, it concluded a truce with Granada and declared that it would not accept anyone as new regent if appointed without their consent, and created a budget for the regional defense. [3] The hermanded concluded an eight-year peace treaty with Ismail I of Granada in June 1320, without prior authorization of the crown. [4] On 13 August 1325, Alfonso XI was declared of age and assumed control of his government. He ordered the dissolution of the hermandad which he perceived as a challenge to his authority. [5]