Year 1391 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 massacres, though a large number remain in the city. Manuel II Palaiologos becomes Byzantine Emperor after his father, John V Pal… (More on 1391)