Taishō Tennō (大正天皇), the emperor Taishō , known of alive sound in occident by its personal name Yoshihito (嘉仁) (August 31st 1879 - December 25th 1926), it reigned of the December 30th 1912 at December 25th 1926, and was the hundred twenty-third Empereur of Japan. Its name of prince was Haru (prince Haru No Miya). According to the Japanese imperial tradition, it is indicated after its death by a posthumous name which, since 1868, is identical in the name of the era of its reign. To the reign of the Taishō emperor the era Taishō corresponds exactly (大正).

3rd wire of the emperor Meiji by a concubine (Yanagihara Naruko), father of the emperor Shōwa, it receives his education at the university for pairs ( Gakushuin ) with Western style. May 10th, 1900, the crown prince Yoshihito, married with Sadako, the girl of prince Kujo Mitchitaka, with which, it had 4 children:

1. prince Michi, future emperor Shōwa (Hirohito) (April 29th, 1901 - January 7th, 1989)
2. the prince Chichibu (Yasuhito) (May 26th, 1902 - January 4th, 1953)
3. prince Takamatsu (Nobuhito) (March 1st, 1905 - February 3rd, 1987)
4. the prince Mikasa (Takahito) (December 2nd, 1915)

It became the hundred twenty-third emperor in 1912 and proclaimed his era “Taishō”. It was crowned in 1915 with Kyōto but, because of its cerebral disease (it suffered from a kind of meningitis), was quickly in impossibility of managing the businesses of state. The prince Hirohito became his regent in 1921.

Its reign is characterized by a reinforcement of the imperialism and a rather liberal interior policy. In 1919, it signed a “act of reform” and in March 1925, accepted the principle of the vote for all. Under the Taishō era, the known country a great industrial rise but was marked by several dramatic events like the First World War, a terrible revolt in Korea and a catastrophic earthquake of September 1923 which affected all the Kantō and almost completely destroyed the town of Tōkyō.

The Taishō emperor died on December 25th, 1926 with 1 hour 25 of the morning of an attack of the heart (myocardial infarction) to the palate of Hayama, and it was his/her Hirohito son who succeeded to him officially, becoming thus the 124e emperor. Yoshihito was called more only by the name of its era, Taishō, “Great Justice”.