Jacobus Colyer

The treat, signed on 26 January 1699,[2] concluded the Great Turkish War in which the Ottoman Empire was defeated by the Holy League at the Battle of Zenta.

[3] The Treaty marked the end of Ottoman control in much of Central Europe, with their first major territorial losses, beginning the reversal of four centuries of expansion, and established the Habsburg monarchy as the dominant power of the region.

[4] In gratitude for his efforts, he was created a Count of the Holy Roman Empire and was granted the title Duke of Hungary by the Habsburg King Leopold I in 1699.

[5] After war resumed again in the early 18th century, Colyer was asked to return to Serbia for a second time in 1718 to broker yet another peace, known as the Treaty of Passarowitz between the Ottoman Empire and Austria of the Habsburg monarchy and the Republic of Venice.

The treaty, signed in Požarevac on 21 July 1718,[6] which saw the cession of several Ottoman territories to the Habsburgs, and, at the time, was regarded as an extraordinary success and source of pride in Vienna.