After the war, when the burial ground for Tokugawa family at Zojo-ji was sold to Seibu Railway Co., Ltd., Kodaiin's grave was also dug up and her height was determined to be 143.8 cm.
戦後、増上寺・徳川家墓所が西武鉄道に売却された際に広大院の墓も発掘されたが、身長は143.8cmであった。