Iwakura Tomomi
Ōen promulgated his highly xenophobic views through his school, the Gendōkan, which he founded in 1837 at Chiba Castle. He advocated resistance to Western influence and trade, and recommended the expulsion of foreigners from Japan. In 1868. he became a teacher at the Jishūkan, and also worked as an advisor to Iwakura Tomomi. He died aged 73 at the home of his student Otaguro Tomoo.