Further, Chikasue is said to have become an adopted child of Masayoshi MATSUDAIRA, and his child, Arichika and his grandchild, Chikauji MATSUDAIRA are said to have gone down to Mikawa Province and have become the originator of the Matsudaira clan.
また親季は松平正義の養子となり、その子の有親と孫・松平親氏が三河に流れ松平氏の祖となったという。