Hōgen (era)

Hōgen (保元) was a Japanese era name (年号, nengō, lit.

"year name") after Kyūju and before Heiji.

This period spanned the years from April 1156 through April 1159.

[1] The reigning emperors were Emperor Go-Shirakawa-tennō (後白河天皇) and Emperor Nijō-tennō (二条天皇).

[2]