Qazi Isa Savaji was a Persian bureaucrat from the Savaji family, who was among the leading figures during the reign of the Aq Qoyunlu rulers Uzun Hasan and Ya'qub Beg.
Illustration of Ya'qub Beg surrounded by his court
Yaqub b. Uzun Hasan, commonly known as Sultan Ya'qub was the ruler of the Aq Qoyunlu from 1478 until his death on 24 December 1490. A son of Uzun Hasan, he became the ruler of the dynasty after the death of his brother Sultan Khalil. The borders of Aq Qoyunlu dynasty remained stable during his reign. In his book Alam-Aray-i Amini, Fazlallah Khunji Isfahani praised him as a decent successor of Uzun Hasan. Ya'qub received praise from other historians for supporting poets and scientists.
Sultan Ya'qub Aq Qoyunlu in a folio from the Majalis al-ushshaq, dated October/November 1552
Firman of Ya'qub concerning land rights given previously by the deceased Qara Qoyunlu ruler Jahan Shah to two sons of Sayyid Ni'matullah. Created in Iran
Helmet inscribed in the name of Sultan Ya'qub, located in Metropolitan Museum of Art.