When last we spoke, Mongke Khan was cleaning up after his rise to power. He’d gained the support of the khan in the northwest, Batu the kingmaker, the most senior of the Genghisid royal family still remaining. He’d turned back the attempts, both political and more confrontational, of his cousins in the Chagatai and Ogedei lines. He’d violently disposed of the former regent, who sank beneath the surface of a river wrapped in cloth. And soon he’d be issuing orders for the next phases of the Mongol Empire’s expansion: sending his brothers out, Hulagu into Persia and Kublai further into China.

His counterpart in this story and the focus of this episode had also been busy, but with perhaps less grandiose impact upon the world. He’d been in Cyprus as 1248 turned into 1249. He’d travelled with King Louis IX’s army into Egypt. He’d parted with King Louis IX in Jaffa in 1253, had stopped in Acre, and then preached in crusader-held Constantinople on April the 13th of the same year, receiving a letter of introduction from the Latin Emperor Baldwin to the closest Mongol commander. And from there and then he had departed, to evangelize and to provide comfort and instruction, particularly to a population of German prisoners who were said to be held by the Mongols. Fortunately for us, he wrote a letter to Louis detailing his journey and all that he had learned, more a book really than a letter.