Fourth emir hafsi of Tunisia (1279-1283), known as Ibrahim I Abu Ishaq, was the son of the founder of the dynasty and first emir hafsi of Tunisia, Yahya I (1229-1249). He succeeded his nephew Yahya II (1277-1279) then that is declared to be in rebellion against him and commanded them to kill, thanks to the partnership established with the nasrids of Granada, the abd el-wadies of Tlemcen and the Aragonese monarch Pedro III (1276-1285), who hoped to enfeudar the State hafsi to satisfy his Mediterranean ambitions and on the Angevin Sicily territorial ambitions.
The military alliance between the Tunisian and the Aragonese did not hesitate long break by mutual mistrust between both sovereign and territorial issues. In the month of June of the year 1282, Pedro III of Aragon militarily supported the revolt of the Governor of Constantine, who was proclaimed independent emir of Tunisia. This support was not positive for the Aragonese monarch, so he decided to take advantage of the difficulties which at the time were passing the Angevins to gain total control of the island and forget their Tunisian territorial claims. This allowed Ibrahim I put order in his Kingdom and suppress all the various uprisings that have emerged.
Ibrahim I maintained good relations with the major trading powers of Italy and became a lasting Alliance with the dynasty of the abd el-wadies by the marriage of one of his daughters with the Crown Prince of Tlemcen. However, he had to flee precipitately to spark plug when a name Ibn Ami Umara adventurer, which purported to be the son of the former emir Yahya II (1277-1279), seized all the South of the country and proclaimed himself Caliph in the year 1283. To show is unable to expel the upstart, Ibrahim I was forced by the notables of the Kingdom to abdicate in favour of his son Abd al-Aziz I Abu Faris (1283). That same year, both were executed by Ibn Ami Umara, who ascended the throne hafsi named Ahmad Ibn Marzuq (1283-1284).