He is best known for his travels to various parts of the Middle East and Central Asia in the 13th century, including the Mongol Empire. His account of his travels is one of the masterpieces of medieval travel literature, comparable to those of Marco Polo and Ibn Battuta.
https://en.wikipedia.org/wiki/William_of_Rubruck
The Journal is on archive.org! https://archive.org/details/in.ernet.dli.2015.46963/page/n59/mode/2up
