Shōhō
Japanese era from January 1645 to April 1648 / From Wikipedia, the free encyclopedia
Shōhō (正保) was a Japanese era name (年号,, nengō,, lit. "year name") after Kan'ei and before Keian. This period started in December 1644 and ended in February 1648.[1] During this time, the emperor was Go-Kōmyō-tennō (後光明天皇).[2]