was a Heian period provincial magnate (gōzoku) and samurai based in eastern Japan, notable for leading the first recorded uprising against the central government in Kyōto. Early life Masakado was one of the sons of Taira no Yoshimasa (平良将), also known as Taira no Yoshimochi (平良持), of the Kanmu Taira clan (Kanmu Heishi), descendants of Emperor Kanmu (reigned 781–806) who were demoted from princely to commoner status and granted the Taira surname. Yoshimochi was one of the sons of Prince Takamochi, a grandson or great-grandson of Kanmu who was appointed the vice-governor of Kazusa Province (modern central Chiba Prefecture) in 889 (Kanpyō 1). Takamochi's sons who joined him there occupied a variety of provincial offices in the eastern part of the country such as that of chinjufu shōgun, the commander-in-chief of the defense garrison (chinjufu) in Mutsu Province tasked with subjugating the Emishi peoples of the north. Not much is known of Masakado's birth and early life due to lack of written evidence. The genealogical record Sonpi Bunmyaku (compiled 1377-1395) identifies Masakado as the third of Yoshimochi's eight sons, while the genealogy of the Sōma clan (an offshoot of the Chiba clan, who were descended from Masakado's uncle Yoshifumi), the Sōma Keizu (相馬系図), identifies him as the second of seven sons. The latter text also claims that he was nicknamed Sōma no Kojirō (相馬小次郎, Kojirō meaning "little second son") during his childhood, suggesting that he was raised in the district of Sōma (相馬郡) in Shimōsa Province (part of modern southwest Ibaraki Prefecture and northwest Chiba Prefecture), though the factuality of this information has been disputed. Masakado's mother is sometimes identified as the daughter of a certain Agata (no) Inukai no Harue (県犬養春枝), perhaps a local magnate from Sōma District. Masakado's year of birth is also unclear. Accounts of his exploits in the mid-930s suggest that his children were young enough to be still in the care of their mother, which may imply that he was born sometime around 900. Later legend portrays Masakado as the reincarnation of scholar and politician Sugawara no Michizane (later deified as the god Tenjin), who died in 903 (Engi 3). At some point in his late teens, Masakado went to the capital city of Heian-kyō (Kyōto) and served in the household of the imperial regent Fujiwara no Tadahira. He is said to have aspired for a position within the imperial police force, the Kebiishi, but