Though his mother's name was not recorded, the Gosen Wakashū, an anthology of Japanese poems, mentions the name "Mother of Kiyotada" (清正母). His elder brother was Masatada.
The Gosen Wakashū, an anthology of Japanese poetry, does not record his mother's name but mentions "Mother of Kiyotada" (清正母). His elder sibling is named Masatada.