Oeyo

Oeyo (1573–1626), also called Gō and later Sūgen-in, was the youngest daughter of Asai Nagamasa and Oichi, Nobunaga’s sister. The Asai household fell in the year of her birth. Her mother later married Shibata Katsuie; both died after his defeat in 1583. Oeyo and her sisters survived under Toyotomi Hideyoshi’s protection, and she became his adopted daughter. Her later connections began with the destruction of her own natal household. [S01]

She married Saji Kazunari, then Hashiba Hidekatsu after that marriage ended. Hidekatsu died during the invasion of Korea. In the mid-1590s she married Tokugawa Hidetada, who later became the second shogun; reference entries differ between 1594 and 1595. Their children included Iemitsu, Tadanaga, Senhime and Masako. Oeyo’s elder sister Yodo-dono was Hideyori’s mother, while Senhime became his wife. The Toyotomi and Tokugawa households were therefore bound by close family ties before their final conflict. [S01, S03]

Masako entered the imperial court as Go-Mizunoo’s consort in 1620, extending the household’s relationships into the monarchy. Oeyo died at Edo Castle in 1626, before Masako’s daughter became Emperor Meishō. Her position as a shogun’s principal wife carried the work and risks of a large dynastic household. Its children’s marriages linked institutions that still possessed competing interests; kinship could survive across them without preventing political violence. [S02, S01]