24 September 1180: Death of Manuel I Komnenos. Ascent of underage Alexios II to the throne
spring of 1181: Rebellion of the people of Constantinople
spring of 1182: John Komnenos Vatatzes opposes Andronikos Komnenos
end of spring of 1182: Victory of the rebel army of Vatatzes against the imperial troops. Death of John Komnenos Vatatzes
May 1182: Andronikos Komnenos enters Constantinople