Year 1391 (MCCCXCI) was a common year starting on Sunday (link will display full calendar) of the Julian calendar. Events 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 erupt in Toledo, Spain and Barcelona. Many Jews leave Barcelona after the following, though a large number remain in the city. Manuel II Palaiologos becomes Byzantine Emperor after hi… (More on 1391)