OshihimeOshihime was empress consort of Japan, and later empress dowager from 367 BC to 290 BC and then 290 BC to an unknown date, respectively.LifeShe was the daughter of Prince Amatarashikunioshihito and wife to Emperor Kōan. She bore him two children, and was the Emperor's only wife, meaning he did not take concubines. Emperor Kōan belongs to a group of Emperors, starting with Emperor Suizei known as the Kesshi-hachidai. As such, there is little more than genealogy available for both him and his wife, Oshihime.