In about 1847, he studied under Shusuke KONDO, the third generation grand master for Tennenrishinryu swordsmanship, that was spreading around Tama District.
弘化4年（1847年）頃、源三郎は当時多摩郡に広まりつつあった天然理心流剣術の三代目宗家・近藤周助に入門する。