At this time, Yoritomo composed a waka poem, 石川の館の麓の河隈に明賀の松の影そ映ふ (The shadow of pine trees of Meiga was mirrored on the river at the foot of the residence of Ishikawa).
この時頼朝は、石川の館の麓の河隈に明賀の松の影そ映ふ、と和歌を詠んでいる。