Abaza Siyavuş Pasha I

In 1638, he was promoted to vizier, and in 1640, he was appointed Kapudan Pasha (Admiral of the Navy). In 1642, he was tasked with recapturing the fort of Azov (in modern Russia) from the Cossacks, but failed. He was then assigned to various cities as governor, including Erzurum, Diyarbakır (both in modern Turkey) and Silistra (in modern Bulgaria). On 5 March 1651, he was promoted to be the grand vizier following an uprising of tradesmen in Istanbul. On 27 September, a little more than a month after his appointment, he was dismissed from his post and was about to be executed when Kösem Sultan intervened to save his life.Kösem Sultan intervention He was appointed as the governor of Bosnia. He married Safiye Hanımsultan, daughter of Gevherhan Sultan and granddaughter of Ahmed I.

• Honorific Prefix — Abaza • Name — Siyavuş • Honorific Suffix — Pasha • Office1 — Grand Vizier of the Ottoman Empire • Monarch1 — Mehmed IV • Term Start1 — 5 March 1656 • Term End1 — 25 April 1656 • Predecessor1 — Zurnazen Mustafa Pasha • Successor1 — Boynuyaralı Mehmed Pasha • Monarch2 — Mehmed IV • Term Start2 — 21 August 1651 • Term End2 — 27 September 1651 • Predecessor2 — Melek Ahmed Pasha • Successor2 — Gürcü Mehmed Pasha • Died — 25 April 1656 • Place of death — Istanbul, Ottoman Empire • Spouse — Safiye Hanimsultan

The authorities additionally record the heading Siyavuş Paşa. His recorded languages were Ottoman Turkish, Turkish and Arabic. His recorded confession was Islam.