The merchant ship on which the person named 'Totaro Nyudonine' was aboard was wrecked off the coast of Hinoshima (present-day Hinoshima, Shinkamigoto-cho, Nagasaki Prefecture) in 1298 and it is assumed that the luggage belonged to the persons concerned the Tokuso Family of the Hojo clan were among the luggage tossed into the sea ("aokata monjo," the written records of the Aokata clan).
永仁6年（1298年）に「藤太郎入道忍恵」という人物が乗る商船が樋島（現在の長崎県新上五島町日島）沖にて大破したが、流出した荷物の中には北条氏得宗家関係者の荷物も含まれていたとされている（『青方文書』）。