Jaume the Just (1291-1327) was born in Valencia in 1267 and came to the throne on the death of his brother Alfons II so uniting Sicily with the rest of the Crown of Aragon. During his reign, Catalonia not only became a significant Mediterranean power but also increased its possessions on the Iberian peninsular.
Jaume the Just (1291-1327) came to the throne on the death of his brother Alfons II so uniting Sicily with the rest of the Crown of Aragon. During the thirty five years of his reign, Catalonia not only became a significant Mediterranean power but also increased its possessions on the Iberian peninsular.
Jaume definitively solved the Sicilian conflict through the Treaties of Anagni (1295) and Caltabellota (1302). At Anagni, Jaume II gave up Sicily in exchange for the islands of Corsica and Sardinia, an important centre because of its location in the Mediterranean and its salt mines, coral, silver mines and grain. Furthermore, Mallorca, Menorca and Ibiza returned to Jaume II of Mallorca, who declared himself a vassal of the Catalan King.
The Sicilians didn't accept this treaty and proclaimed Jaume II's brother Frederic II as their king and this led to another war, which ended with the Peace of Caltabellota, which recognised Frederic II as King of Sicily until his death, when the island would pass into French hands.
This agreement wasn't fulfilled either, but his death, Frederic II was succeeded by his son, which meant a branch of the Catalan dynasty governed the island and Catalan interests were guaranteed.
At the same time, Jaume II intervened in Castile's internal conflicts between Fernando IV and the "infants de la Cerda" as well as conquering the Kingdom of Murcia and obtaining territory in Alicante.
For this reason, Jaume reinforced his Mediterranean policies by increasing the presence of the Crown of Aragon, occupying Sardinia (1324) and the Duchies of Athens and Neopatria, which the Almogàvers obtained from the Byzantine Empire.
Finally, we must mention that Jaume II annexed, although definitively, the County of Urgell through the marriage of his son, the future Alfons II to the heiress to Urgell, Teresa of Entença.