John IV of Trebizond had sent his…

John IV of Trebizond had sent his brother David to ratify the treaty before Mehmed II himself, which he does in 1458, but the tribute is raised to three thousand gold pieces.

An alliance with the powerful Aq Qoyunlu tribe, who are the Ottomans' most powerful rival, appears more than beneficial.

Trebziond and the Aq Qoyunlu have a history of cooperation.

The-great aunt of John IV of Trebizond, the reigning emperor, had married Qara Osman, emir of the Aq Qoyunlu.

Uzun Hassan eagerly agrees to be the protector of Trebizond, as well as making other concessions, in return for the hand of John’s daughter Theodora, who is widely famous for her great beauty.

News of the Princess of Trebizond as the consort of the powerful Uzun Hassan will spread to the West, and helps to foster stories of Princess of Trebizond.

However, this alliance will fail to help John's successor, his brother David.