Tenshō (Heian period)

Change of Era

• January 31, 1131 Tenshō gannen: The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Daiji 6, on the 29th day of the 1st month of 1131.

  Events of the ''Tenshō'' Era

• 1131 : The udaijin Fujiwara Yetada was elevated to sadaijin; and the naidaijin Arihito filled that vacancy by becoming udaijin. The dainagon Fujiwara no Munetada was made nadaijin.