Petrus de Monte Libano was a Maronite friar from Syria

Syria

Syria , officially the Syrian Arab Republic , is a country in Western Asia, bordering Lebanon and the Mediterranean Sea to the West, Turkey to the north, Iraq to the east, Jordan to the south, and Israel to the southwest....

 who was sent in 1516 by Ludwig II of Hungary to the Persian court of the Safavid Empire to negotiate a Habsburg-Persian alliance

Habsburg-Persian alliance

A Habsburg-Persian alliance was attempted and to a certain extent achieved in the 16th century between the Habsburg Empire and the Persian Empire in their common conflict against the Ottoman Empire.-First contacts:...

 against the Ottoman Empire

Ottoman Empire

The Ottoman EmpireIt was usually referred to as the "Ottoman Empire", the "Turkish Empire", the "Ottoman Caliphate" or more commonly "Turkey" by its contemporaries...

.

That same year, the was sent by the Persian court to Poland

Poland

Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

 with letters addressed to European monarchs proposing an anti-Ottoman alliance.

In October 1523 Petrus de Monte Libano was again sent on a mission to Emperor Charles V

Charles V, Holy Roman Emperor

Charles V was ruler of the Holy Roman Empire from 1519 and, as Charles I, of the Spanish Empire from 1516 until his voluntary retirement and abdication in favor of his younger brother Ferdinand I and his son Philip II in 1556.As...

 and Ludwig II of Hungary again to establish an alliance.