Sojun YOSHIDA, the younger brother of the wealthy merchant Ryoi SUMINOKURA of Kyoto who was responsible for digging Takase-gawa River, was in the service of Hidetsugu.
実は高瀬川の開削責任者だった京都の豪商、角倉了以の実弟吉田宗恂は、秀次に仕えていた。