Judicate of Arborea in the context of Sardinian–Aragonese war

The Judicate of Logudoro or Torres (Sardinian: Judicadu de Logudoro or Torres, Rennu de Logudoro or Logu de Torres) was one of the four kingdoms or iudicati into which Sardinia was divided during the Middle Ages. It occupied the northwest part of the island from the 11th through the 13th century, bordering the Gallura to the east, Arborea to the south, and Cagliari to the southeast. Its original capital was Porto Torres. The region is still called Logudoro today.

Logudoro was the largest and earliest of the iudicati but also the second to be subsumed by a foreign power. It was divided into twenty curatoriae, ruled by curatores.

The Aragonese conquest of Sardinia took place between 1323 and 1326. The island of Sardinia was at the time subject to the influence of the Republic of Pisa, the Pisan della Gherardesca family, Genoa and of the Genoese families of Doria and the Malaspina; the only native political entity survived was the Judicate of Arborea, allied with the Crown of Aragon. The financial difficulties due to the wars in Sicily (until 1295), the conflict with the Crown of Castile in the land of Murcia and Alicante (1296–1304) and the failed attempt to conquer Almeria (1309) explain the delay of James II of Aragon in bringing the conquest of Sardinia, enfeoffed to him by Pope Boniface VIII in 1297.

The possession of the island of Sardinia was crucial for the Crown of Aragon. Sardinia was abundant of natural resources like silver and salt and had a thriving agro-pastoral economy; also its geographical location ensured more control over the western Mediterranean and the island itself was an indispensable basis for the creation of so-called ruta de las islas (route of the islands) that allowed to halve the time of sailing to reach the rich markets of the Eastern Mediterranean.

The Judicate of Cagliari (Sardinian: Judicadu de Càralis / Càlaris, Italian: Giudicato di Cagliari) was one of the four kingdoms or judicates (iudicati, literally "judgeship") into which Sardinia was divided during the Middle Ages.

The Judicate of Cagliari occupied the entire southern portion of the island and was composed of thirteen subdivisions called curatoriae. It bordered the judicates of Arborea to the northwest and Logudoro and Gallura to the northeast.

Eleanor of Arborea or Eleanor De Serra Bas (Sardinian: Elianora de Arbarée / Elianora De Serra Bas, Italian: Eleonora d'Arborea / Eleonora De Serra Bas; 1347 – June 1404) was one of the most powerful and important, and one of the last, judges of the Judicate of Arborea in Sardinia, and Sardinia's most famous heroine. She is also known for updating of the Carta de Logu, promulgated by her father Marianus IV and revisited by her brother Hugh III.