thumb | right | alt=Painting on silk of the Emperor Go-Mizunoo wearing formal robes and sitting on a mat | Portrait of Emperor Go Mizunoo, 18th Century
was a coming after Keichō and before Kan'ei. This period spanned the years from July 1615 to February 1624. The reigning emperor was . It is also known as Genwa.
Change of era
- 1615 : The era name was changed to mark the enthronement of Go-Mizunuoo and because of disasters such as the , or more commonly, . The old era ended and a new one commenced in Keichō 20.
The siege of Osaka was a series of battles undertaken by the Tokugawa shogunate against the Toyotomi clan, ending in that clan's destruction. Divided into two stages (the "Winter Campaign" and the "Summer Campaign"), and lasting from 1614 through 1615, the siege put an end to the last major armed opposition to the establishment of an enduring Tokugawa shogunate. The end of this period of fighting is also sometimes called the because the era name was changed from Keichō to Genna immediately following its ultimate resolution.
By order of Tokugawa Ieyasu, the era name of Emperor Xianzong of Tang China was adopted.
Events of the Genna era
- 1615 (Genna 1): Tokugawa Ieyasu and his son, Shōgun Hidetada, marched again to Osaka Castle, which was captured and burned.
- September 1, 1615 (Genna 1, 9th day of the 7th month)<!--NengoCalc 元和一年七月九日 -->: Ieyasu pulled down Hōkoku-jinja.
- September 20, 1615 (Genna 1, 28th day of the 7th month)<!--NengoCalc 元和一年七月二十八日 -->: Ieyasu promulgated the Genna-rei in 17 clauses.
- September 25, 1617 (Genna 3, 26th day of the 8th month)<!-- NengoCalc 元和三年八月二十六日 -->: Former-Emperor Go-Yōzei died. He is buried at Nikkō.
- 1620 (Genna 6): There were severe fires in Mikayo on the 30th day of the 2nd month and on the 4th day of the 3rd month.
- September 6, 1623 (Genna 9, 12th day of the 8th month)<!-- NengoCalc 元和九年八月十二日 -->: the bakufu raised the Imperial maintenance allowance by 10,000 koku.
