Her mother Yumiko is descended from the Egashira clan which served the Saga clans near Nagasaki on the island of Kyushu. One of the Egashiras, Yasutaro, went on to command a battleship in the Russo-Japanese War. Yumiko's father was a wealthy banker who was at the time of her marriage the managing director of the Industrial Bank of Japan.Hills, p. 39.
