Imagawa clan
Neither the name of Lady Saigō's mother nor her dates of birth or death are recorded in any existing documents, although it is known that she was the elder sister of Saigō Kiyokazu. Lady Saigō's father was Tozuka Tadaharu of Tōtōmi Province, under direct control of the Imagawa clan. The marriage between Tadaharu and his wife was very likely arranged by the Imagawa clan.