IBRAHIM (d. 1536), grand vizier of Turkey, was the son of a sailor at Parga, was sold into slavery, and was bought by the sultan, Solyman II., who made him his grand vizier and married him to his own sister. Ibrahim, says a Venetian record, was "the heart and breath of the Padishah, who does nothing without consulting him; he is learned, fond of reading, and knows his law well." He was made commander-in-chief of the army for the invasion of Hungary, and in 1526 took Peterwardein. But his main functions were diplomatic. With the Venetian Gritti he conducted the negotiations for peace between the sultan and the emperor Ferdinand in 1533. In the autumn of that year he took command in Asia against the Persians. He occupied Tabriz on July 13; he was then joined by Solyman, and marched against Baghdad. In both cases he prevented plunder. They returned to Constantinople on Jan. 8, 1S36. He had for 14 years been the sultan's constant companion, even sharing his sleeping apart ments. They retired as usual on March 3o, and in the morning Ibrahim was found strangled by the sultan's orders.