King of Aragon from the year 1162 to the 1196. Son and successor of Ramón Berenguer IV and Doña Petronila. It had ten years to the death of his father, therefore her mother continued to govern the Kingdom of Aragon, while Ramón Berenguer, count of Provence, ruled the County of Barcelona. At the age of twelve, was made by the Government of Aragon and Catalonia, consolidated for the first time under a single sceptre. Immediately by coronado, he/she met cortes in Zaragoza, which became known as Cortes de Aragón. He/She also inherited the County of Provence to the death of his uncle, but Raymond V, count of Toulouse, was in turn made with the County. The clash Alfonso II and Raimundo V lasted several years, until they were found both in Gernica in 1176 and reached an agreement by which Alfonso retained the County of Provence in Exchange for a stipend. Alfonso also inherited the County of Roussillon in 1172 to the death of Gerard II.
He did not want to antagonise Alfonso VIII, King of Castile, and in Sahagun sealed the mutual harmony and they decided to respect the Treaty of Tudellen. He/She devoted himself thereafter to fight the Muslims by the taifa of Valencia and Murcia. During his campaign of reconquest, Sancho VI of Navarre took advantage of the absence to penetrate into Aragon. Alfonso receded to its meeting and ravaged Tudela.Las aid between the Aragonese and Castilian continued. In 1179 both monarchs agreed in Sagunto to delimit the territories of the reconquest: Alfonso VIII was decanted by Alfonso II by Valencia and Murcia. But Castilla increasingly was becoming more powerful and the Aragonese King decided to change its policy of alliances; in 1190 the town of Borja watched as Alfonso II met with Sancho VI to establish an anti-castellana Alliance, to which were added a year later Alfonso IX of Leon and Sancho I of Portugal. Warlike races between Castilian and Aragonese, Alfonso II showed his error, because it greatly desguarnecía the Christian territory against the ever-present danger of Muslim.
To him the Foundation of Teruel is due in 1171. It was a great protector of the letters, and even compose some poetry in Provençal style.He was married to Doña Sancha of Castile, with whom he/she had three sons: Pedro (his heir in Aragon and Catalonia), Alfonso (who left Provence) and Fernando, who professed in the order of the Cistercian order.