The History of Yaballaha III and Rabban Sauma is an original Syriac historical document of the Assyrian Church of the East in the 13th century. It records the adventures of two members of the Church from China who set out on a pilgrimage to Jerusalem. On the way, one becomes Patriarch of the Church of the East and the other is sent on a mission to Europe on behalf of the Mongol Khan. This volume contains the original Syriac text edited by Fr. Paul Bedjan, one of the greatest Syriac scholars of the last century. His edition also includes the histories of Patriarchs Mar Awa, Mar Saurisho, Mar Dinkha, and other clergy of the Assyrian Church of the East.