André de Longjumeau

André de Longjumeau (also known as Andrew of Longjumeau in English) was a French diplomat and Dominican missionary and one of the most active Occidental diplomats in the East in the 13th century. He led two embassies to the Mongols: the first carried letters from Pope Innocent IV and the second bore gifts and letters from Louis IX of France to Güyük Khan. Well acquainted with the Middle East, he spoke Arabic and "Chaldean" (thought to be either Syriac or Persian).