Taira no Tsunemasa

Taira no Tsunemasa (1010–1076) was a mid-Heian warrior of the Bandō Taira and a son of Taira no Tadatsune. After his father's revolt of 1028 and surrender in 1031, Tsunemasa and his younger brother escorted him toward the capital; Tadatsune died of illness in Mino and the brothers were pardoned.

Back in Shimōsa, he styled himself Chiba no suke, and Chiba genealogies count him as the first head of the Chiba clan. He was the father of Taira no Tsunenaga.