Year of the Three Emperors
The Year of the Three Emperors, or the Year of the Three Kaisers (German: Dreikaiserjahr), refers to the year 1888 during the German Empire in German history. The year is considered to have memorable significance because of the deaths of two German Emperors, or Kaisers, leading to a rapid succession of three monarchs within one year.
Source: Wikipedia — Year of the Three Emperors (CC BY-SA 4.0)