According to an article of February 10, 1187 in the "Azuma Kagami," it is reported that Yoshitsune escaped a blockade of pursuers, and went to Oshu through Ise and Mino Provinces to seek exile in Hiraizumi with his official wife and children.
『吾妻鏡』文治3年（1187年）2月10日_(旧暦)の記録によると、義経は追捕の網をかいくぐり、伊勢・美濃国を経て奥州へ向かい、正妻と子らを伴って平泉に身を寄せた。