In 1159, MINAMOTO no Yoshitomo defeated in the Heiji War and was escaping to Togoku (the eastern part of Japan, particularly Kanto region) put himself under the protection of Tadamune, who was the father-in-law of Masakiyo Kamata, a person accompanying him at that time.
平治元年（1159年）、平治の乱に敗れた源義朝は、東国への逃避行の途中、随行していた鎌田政清の舅である忠致のもとに身を寄せる。