Taira no Tsunekane
Taira no Tsunekane (1045–1126) was a warrior and the first head of the Chiba clan. The son of Taira no Tsunenaga, he is said to have taken the title Chiba Daisuke from the Chiba estate in Shimōsa, which gave the clan its name.
Chronicles record him fighting beside his father in the Later Three Years' War of 1083–1087. His third son Tsuneshige, adopted by his younger brother Tsuneharu, inherited both the Chiba name and the headship of the Bōsō Taira, a succession that later split the clan.