Wikipedia
Oichi
was a female historical figure in the late Sengoku period. She is known primarily as the mother of three daughters who married well – Yodo-dono, Ohatsu and Oeyo.
Oichi was the younger sister of Oda Nobunaga; and she was the sister-in-law of Nōhime, the daughter of Saitō Dōsan. Oichi was equally renowned for her beauty and her resolve. She was descended from the Taira and Fujiwara clans.