Year 1391 (MCCCXCI) was a common year starting on Sunday (link will display full calendar) of the Julian calendar. Events June 6 – Anti-Jewish riots erupt in Seville, Spain. Many thousands of Jews are massacred and the violence spreads throughout Spain and Portugal. July 18 – Tokhtamysh-Timur War: Battle of the Kondurcha River – Timur defeats Tokhtamysh of the Golden Horde in present day southeast Russia. August 5 – Anti-Jewish riots spread to Toledo, Spain and Barcelo… (More on 1391)