followed five years later by another son, John. Eleanor earnestly sought to advance the interests of her own infant sons over those of her stepson, the Infante Peter, who was the heir-apparent. She convinced her husband to grant very large and significant territories to her sons. on 28 December 1329, Alfonso granted his new-born son Ferdinand the Marquisate of Tortosa and the cities of Albarracín, Orihuela, Callosa d'en Sarrià, Guardamar, Alicante, Monforte, Elda, La Mola, Novelda and Aspe. Eleanor's younger son John, who was born five years later, was also granted several lordships when he was only a toddler: Elche, Biel and Bolsa were all bestowed upon him. These territories would be controlled by Eleanor, who had also received the city of Huesca and some other villages and castles belonging to the Aragonese crown at the time of her wedding. Nor was this all. While all of the above grants had been made from among the possessions of the Aragonese crown, the King also sought to bestow estates located within the Kingdom of Valencia upon the toddler Ferdinand, but he was prevented from doing so. When the King granted Ferdinand the cities of Xàtiva, Alzira, Sagunto, Morella, Burriana and Castellón de la Plana, all located in the Kingdom of Valencia, the local subjects protested, and for this reason the King decided to revoked these patents. These grants of land diminished the territorial patrimony of the crown and mainly affected the Infante Peter, Alfonso's son by his first wife, who however was too young to make any significant protest. However, the issue agitated the court, created a climate of resentment and divided the nobility into two camps. Alfonso died in January 1336, aged only 36. He was succeeded by Peter IV, his 16-year-old son from his first marriage. Children By Teresa d'Entença: Alfonso (1315–1317) Constance (1318–1346), married in 1336 to James III of Majorca. Peter IV (1319–1387), successor. James I, Count of Urgell (1321–1347), also inherited Entença and Antillon. Elizabeth (1323–1327). Frederick (1325-died young). Sancho (1327), lived only a few days. By Eleanor of Castile: Ferdinand (1329–1363), Marquis of Tortosa and Lord of Albarracín and Fraga; married Maria, Marchioness of Tortosa and was killed by order of his brother Peter IV. John (1331–1358), Lord of Elche, Biel and Bolsa, married in 1355 to Isabel Núñez de Lara (daughter of Juan Núñez III de Lara) and was killed by order of his