Sadakiyo joined the Western Camp at the Battle of Sekigahara, and after the war, he became a tea master and a merchant, and there are several theories about his wife, which is said to be the daughter of Mitsunari ISHIDA, a younger sister of Yoshitsugu OTANI, or the daughter of Nobushige SANADA.
貞清は関ヶ原の戦いで西軍に与して戦後は茶人・商人となっていた人物で、その妻について石田三成の娘、大谷吉継の妹、真田信繁の娘などの諸説がある。