Because Emperor Go-Toba was enthroned before the abdication of Emperor Antoku, there was an overlapping period of two years in which there were two emperors (between 1183 and 1185), until the Taira clan disappeared. 安徳天皇が退位しないまま、後鳥羽天皇が即位したため寿永2年(1183年)から平氏滅亡の文治元年(1185年)まで間、在位期間が2年間重複している。 |