Azim ud-Din I acceded the throne in 1732 after his father abdicated, but only assumed full powers and formal recognition in 1735 when his cousin,
Nasar ud-Din, abandoned claims to the throne. One of the earliest events in the reign of Azim ud-Din I was his ratification of the Treaty of 1737. He was represented in
Manila by Datu Mohammad Ismael and Datu Ja'far, who both signed the document. The treaty, drawn in January 1737 by
Governor-General Fernando Valdes y Tamon, contained five articles: first, the preservation of permanent peace between the two states; second, the provision for alliance and mutual aid against any foreign foe; third, free trade between the two states; fourth, responsibility of each state for all infractions of the peace; and fifth, provision for the exchange of captives and return of all church images and ornaments.
Abdication On 12 July 1744,
Philip V of Spain sent him a letter requesting permission for missionaries from the
Society of Jesus to propagate Christianity in the southern Philippines. When his
panditas learnt that he had given his assent, they raised fierce opposition. A party was formed under the leadership of the Sultan's brother, Prince
Bantilan, for the purpose of expelling the missionaries and deposing Azim ud-Din I. Hostilities increased and
civil war became imminent. Bantilan tried to assassinate the Sultan by thrusting a spear at him, inflicting a severe wound on his side or thigh. In the ensuing unrest, it became too dangerous for the missionaries to remain in
Jolo. Overpowered, disheartened, and grieved, Azim ud-Din I fled Jolo with his family and retinue for
Zamboanga, where he sought the aid of Spain against Bantilan's unopposed seizure of power. Bantilan did not expel the Jesuits but he gave them no opportunity to accomplish their mission.
Conversion to Christianity Azim ud-Din I travelled to
Cavite on 2 January 1749. In Manila,
Governor-General Juan de Arechederra,
Bishop of Nueva Segovia, gave him a reception befitting a prince of high rank. The Sultan was publicly received in the Hall of the Audiencia, but instead of immediately addressing the issue of his usurpation, he told Arechederra that he wanted to be instructed in the Christian faith preparatory to receiving the
Sacrament of Baptism to the latter's great joy. He was baptised in 1750, taking the name
Fernando de Alimuddin, with the
regnal name of
Ferdinand I (). The new Governor-General, the
Marquis of Brindisi and Ovando, promised now Ferdinand I that the Spanish would restore him to the throne and punish Bantilan and his pirates. a matter held in doubt by the Spanish. ==Second reign==