Хиросаки
There's a temple Henshoji in Mooka, Tochigi. According to an old temple magazine and tradition, Hitachibō Kaison entrusted a monk Hitachi Nyūdō Nensai with a child of Minamoto no Yoshitsune, Keiwaka, as demanded by Hidehira Fujiwara. Furthermore, according to the tradition of Enmyō-ji temple in Hirosaki, Aomori, Chitose Maru, also known as Keiwakamaru was a child of Yoshitsune, entrusted to Date Tomomune by Kaison. After the adoption Kaison disappeared.