Emperor Sakuramachi

Teruhito (昭仁), posthumously honored as Emperor Sakuramachi (桜町天皇) was the 115th emperor of Japan, according to the traditional order of succession. He was enthroned as Emperor in 1735, a reign that would last until 1747 with his abdication. As with previous Emperors during the Edo period, the Tokugawa shogunate had control over Japan.

The Emperor's role was a religious figure who performed limited duties. This changed when Sakuramachi was granted permission from the Shōgun to restore some Imperial rites. Ceremonies such as the Harvest Festival that had previously been absent for over 250 years were now allowed. Sakuramachi had one wife and a concubine with whom he fathered 4 children. His first son would go on to become Emperor Momozono, while his second daughter would later be Empress Go-Sakuramachi. Sakuramachi died on 28 May 1750, which was almost three years after his abdication.

Early life
Before Sakuramachi's ascension to the Chrysanthemum Throne, his personal name (imina) was Teruhito (昭仁). Teruhito was born on 8 February 1720 and was the firstborn son of Emperor Nakamikado, he was also said to be the reincarnation of Prince Shōtoku. Teruhito's Imperial family lived with him in the Dairi of the Heian Palace. Events during Teruhito's early life included Edo becoming the world's largest city in 1721, with a population of 1.1 million people. On 17 July 1728, Teruhito was named crown prince and held the pre-accession title of Waka-no-miya (若宮). The only other major event to occur afterwards was a disaster in 1732–33 called the Kyōhō famine. This event was caused by swarms of locusts that devastated crops in agricultural communities around the inland sea.

Reign
Prince Teruhito acceded to the throne on 13 April 1735 as Emperor when his father abdicated in his favor, the era's name was changed from Kyōhō to Genbun to mark this event. While he held the political title of Emperor, it was in name only as the shoguns of the Tokugawa family controlled Japan. With the support of Tokugawa Yoshimune though, Sakuramachi worked for the restoration of some Imperial rites. Two of the first reinstated ceremonies were brought back in the form of rice offerings. Daijōsai (大嘗祭) is a rice-offering by a newly enthroned Emperor, while Shinjōsai (新嘗祭) is a rice-offering by the Emperor. In 1738, the Emperor performed Esoteric Shinto rituals known as Daijō-e (大嘗會). A major event occurred on 11 January 1741 where a ceremony was performed to mark Niiname-no-Matsuri (Harvest Festival). This specific ceremony had otherwise been held in abeyance for the previous 280 years. The Toyonoakari-no-sechiye ceremonies were also performed the following day.

The era's name was changed to Kanpō in February 1741 due to the belief in Chinese astrology that the 58th year of the sexagenary cycle brings changes. The provinces of Musashi, Kōzuke, Shimotsuke, and Shinano all had noteworthy devastation from a major flood that occurred in 1742. In Heian-kyō, the Sanjo Bridge was also washed away in this destructive storm cycle. During the close of the Kanpō era, a comet was seen and recorded in the Nihon Ōdai Ichiran, a consensus by later researches state that the comet was likely C/1743 X1 (De Cheseaux). The fourth and final era during Sakuramachi's reign began in 1744, and was called Enkyō (meaning "Becoming Prolonged"). This new era was created to mark the start of a new 60-year cycle of the Chinese zodiac. The last two major events during Sakuramachi's reign occurred in 1745, when Tokugawa Ieshige became the new shogun. The first establishment of a market fair in the capital was to be found at Hirano Shrine in Ōmi Province, while in Edo a great fire swept through the city.

Daijō Tennō
Emperor Sakuramachi abdicated on 9 June 1747 in favor of his son Prince Toohito, who became Emperor Momozono. Sakuramachi took on the title of Daijō Tennō (Retired Emperor), and the era's name was changed to Kan'en (meaning "Prolonging Lenience") to mark the occasion. Events that took place during his time as a Jōkō include a powerful storm that struck Kyoto on 7 October 1749. The damage done included the burning of the keep of Nijō Castle after it was struck by lightning. Sakuramachi died on 28 May 1750 which was almost three years after his abdication. Sakuramachi's kami is enshrined in an Imperial mausoleum (misasagi), Tsuki no wa no misasagi, at Sennyū-ji in Higashiyama-ku, Kyoto. Sakuramachi's immediate Imperial predecessors since Emperor Go-Mizunoo – Meishō, Go-Kōmyō, Go-Sai, Reigen, Higashiyama and Nakamikado, are also enshrined along with his immediate Imperial successors, including Momozono, Go-Sakuramachi and Go-Momozono.

Other events
While the Emperor had no say, a major milestone occurred in Japanese monetary history when the shogunate published an edict in 1736 regarding coinage. This edict declared that henceforth, authorized coinage in the empire would be those copper coins which were marked on the obverse with the character 文 (Genbun, also pronounced bun in Japanese). The practice of placing the name of the era on coinage continues to present day with Naruhito (徳仁).

Eras and Kugyō
The years of Sakuramachi's reign are more specifically identified by more than one era name or nengō. While Kugyō (公卿) is a collective term for the very few most powerful men attached to the court of the Emperor of Japan in pre-Meiji eras. Even during those years in which the court's actual influence outside the palace walls was minimal, the hierarchic organization persisted. In general, this elite group included only three to four men at a time. These were hereditary courtiers whose experience and background would have brought them to the pinnacle of a life's career.

The following eras occurred during Sakuramachi's reign:
 * Kyōhō   (1716–1736)
 * Gembun (1736–1741)
 * Kanpō   (1741–1744)
 * Enkyō   (1744–1748)

During Sakuramachi's reign, this apex of the Daijō-kan included:
 * Sadaijin
 * Udaijin
 * Naidaijin
 * Dainagon

Genealogy
Emperor Sakuramachi's family included at least 3 children who were born to 2 consorts:

Issue
Emperor Sakuramachi fathered a total of 3 children with a wife and a concubine.