三河吉田藩
On October 9, 2019, it was announced that an original copy of Teika's "Aobyōshibon" was found in Tokyo at the home of the current head of the Okochi-Matsudaira clan, who ran the Yoshida Domain. The manuscript is the 5th chapter, "Wakamurasaki" (若紫), and is the oldest version of the chapter. Blue ink common in Teika's manuscript and handwriting analysis confirms that it is indeed by Teika, making it among the 5 original versions of the Aobyōshibon that is known to exist.