Genna

Genna (元和) was a Japanese era name (年号, nengō; "year name") coming after Keichō and before Kan'ei. This period spanned the time from September 5, 1615 to April 17, 1624 in the Gregorian calendar. The reigning emperor was Go-Mizunoo-tennō (後水尾天皇). It is also known as Genwa.