Fujiwara no Kamatari in the context of "Fujiwara family"

Emperor Tenji (天智天皇, Tenji-tennō; 626 – January 7, 672), known first as Prince Katsuragi (葛城皇子, Katsuragi no Ōji) and later as Prince Nakano Ōe (中大兄皇子, Nakano Ōe no Ōji) until his accession, was the 38th emperor of Japan who reigned from 668 to 671. He was the son of Emperor Jomei and Empress Kōgyoku (Empress Saimei), and his children included Empress Jitō, Empress Genmei, and Emperor Kōbun.

In 645, Tenji and Fujiwara no Kamatari defeated Soga no Emishi and Soga no Iruka. He established a new government and carried out political reforms. He then assumed real political power as the crown prince of both Emperor Kōtoku and Empress Saimei. Despite the death of Empress Saimei, he did not accede to the throne for seven years, and came to the throne only after the relocation of the capital to Ōmi in 668. He created Japan's first family register, the Kōgo Nenjaku, and the first code of law, the Ōmi Code.

Ame-no-Koyane-no-mikoto (天児屋命, 天児屋根命) is a kami and a male deity in Japanese mythology and Shinto. He is the ancestral god of the Nakatomi clan, and Fujiwara no Kamatari, the founder of the powerful Fujiwara clan. An Amatsukami, 'Kami of heaven', he resides in Takamagahara.

Fujiwara no Fuhito (藤原 不比等: 659 – 13 September 720) was a powerful member of the Imperial court of Japan during the Asuka and Nara periods. Second son of Fujiwara no Kamatari (or, according to one theory, of Emperor Tenji), he had sons by two women, and those sons were the founders of the four principal lineages of the Fujiwara clan: the South, North, Ceremonial, and Capital lineages. Also, he had four daughters by two other women, three by Kamohime, one by Tachibana no Michiyo. One daughter by Kamohime became Emperor Monmu's wife Miyako, who in turn gave birth to Emperor Shōmu. The daughter by Michiyo became the empress of his grandson Shōmu, Empress Kōmyō.

During the reign of Emperor Monmu, the government ordered that only the descendants of Fuhito could bear the Fujiwara surname and could be appointed in the Office of Dajōkan, the center of administratives.

The Ōmi Code (近江令, ōmiryō) are a collection of governing rules compiled in 668AD, and the first collection of Ritsuryō laws in classical Japan. These laws were compiled by Fujiwara no Kamatari under the order of Emperor Tenji. This collection of laws is now lost and its disputed existence is supported only by short references in later documents (among which the Tōshi Kaden, a history of the Fujiwara). It is furthermore missing from the Nihon Shoki.

The Code, consisting of 22 volumes, was promulgated in the last year of Tenji's reign. This legal codification is no longer extant, but it is said to have been refined in what is known as the Asuka Kiyomihara ritsu-ryō of 689; and these are understood to have been a forerunner of the Taihō ritsu-ryō of 701.