相馬氏
The historical Princess Takiyasha was the daughter of the provincial warlord Taira no Masakado of Sōma, who tried to set up an "Eastern Court" in Shimōsa Province in competition with the emperor in Heian-kyō (modern Kyoto). That rebellion was put down in the year 939 and he was defeated, then decapitated. After his death, Princess Takiyasha continued living in the ruined shōen, or rural manor-house, of the Sōma clan, Masakado's former residence.