was a female historical figure in the late Sengoku period. She is known primarily as the mother of three daughters who became prominent figures in their own right – 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. She was descended from the Taira and Fujiwara clans. She was an influential figure in Japanese history in the Sengoku period. Although remembered mainly for her tragic life as sister of Oda Nobunaga, Japan's first unifier, Oichi is also famous for her honorable conduct, her beauty and determination. She was present at two historically significant battles, the siege of Odani and the siege of Kitanosho, sieges that led to the extermination of the powerful Azai and Shibata clan, respectively. Biography Oichi was born in 1547 in Nagoya Castle, Owari Province, the fifth daughter of Oda Nobuhide. She was the younger sister of Nobunaga and Oinu. Her mother was an unnamed concubine who said to have also given birth to several of her siblings. Her other names include Ichihime (市姫), Odani no Kata (小谷の方), and Hideko (秀子). She was prized as a beauty of her time and was cherished by her older brother. She was intelligent and speculated to be slightly taller than most women of the age. Nobunaga once stated, "If Oichi was a man, she would make a fine warrior." Following Nobunaga's conquest of Mino in 1567, Nobunaga arranged for Oichi, then twenty years old, to marry the rival warlord Azai Nagamasa, in an effort to cement an alliance. Nobunaga was very grateful for the marriage and paid for the ceremony entirely (traditionally, the expenses are meant to be shared). Oichi bore Nagamasa one son (Manjumaru) and three daughters – Yodo-dono, Ohatsu and Oeyo. The two clans prospered and worked well together until three years later. Seeing Nobunaga abuse the shogun's power, their relations grew sour and Nagamasa betrayed Nobunaga. In the summer of 1570, Nagamasa betrayed his alliance with Nobunaga and went to war with him on behalf of the Asakura family in the Battle of Anegawa. A story relates that Oichi sent her brother a sack of beans tied at both ends, ostensibly as a good-luck charm but in reality a warning that he was about to be attacked from both front and rear by the Asakura and Azai clans. According to the story,