Through Sohen YAMADA, a master of tea ceremony, this information was conveyed to Shinbei WAKIYA (actually, he was Gengo OTAKA, one of the 47 retainers), who was a disciple of Sohen.
この情報は茶人山田宗偏を通じて、宗偏の弟子脇屋新兵衛（その正体は47士の1人大高源五）につかまれていた。