1302 Peace between Frederick and Charles by which the former retains Sicily, the latter Naples.
1303 The Catalan Grand Company is formed by Roger di Flor from the disbanded mercenaries (chiefly Aragonese and Catalan) of Frederick and takes service with the Greek emperor Andronicus II.
1319 Aragon, Catalonia, and Valencia declared inseparable.
1324 Sardinia invaded by James. With the aid of the grand justice of Arborea, Marian IV, the Pisans are expelled. The grand justice turns his arms against the Aragonese and the war is continued under
1327 Alfonso IV, when the Genoese assist the islanders and ravage the coasts of Catalonia.
1336 Pedro IV refuses to recognise the claims of his stepmother, Leonora of Castile, and her sons, Juan and Ferdinand, to the appanages assigned them under Alfonso’s will, and thus involves himself in civil disputes and a war with Castile. He offends the clergy by crowning himself instead of being crowned by the archbishop of Saragossa.
1343 Invasion of Majorca by Pedro. The islanders welcome him, deserting James II of Majorca. Pedro conquers James’ French possessions.
1344 Balearic Islands formally annexed to Aragon.
1347 Attempt of Pedro to secure the succession to his daughter Constanza in preference to his brother James, in defiance of the Salic law as established by James I. League of nobles and cities in a union in favor of James. The Sardinians backed by the Genoese and Pisans seize the occasion to revolt. A second union formed in Valencia under the infante Ferdinand. At the cortes of Saragossa Pedro is compelled to promise to hold annual meetings of the estates, to select his advisers with their approval, and to recognise James as his heir. Death of James. Pedro wins over the Catalans and at the
1348 battle of Epila defeats the union. He annuls the “Privilege of Union” of 1287, but enlarges the powers of the justiciar. Leonora and her son Juan take refuge in Castile, where both are subsequently murdered by Pedro the Cruel.