千葉氏
The Kazusa Takeda clan, established at the beginning of the Sengoku period in Kazusa Province in the present-day central area of Chiba Prefecture. Along with the Satomi clan of Awa Province in the southern part of present-day Chiba Prefecture the two clan replaced the dominance of the Chiba clan in the region. The Kazusa Takeda are also known as the Mariyatsu Takeda, a reference to their base of power, Mariyatsu Castle.