This is Yamazaki Ansai. His student, Asama Keisa, taught my ancestor
Yamazaki Ansai, Neo-Confucianism, Edo Period, Samurai
Yamazaki Ansai 山崎闇斎 and Okuno Tansai 奥野淡斎
Seiichi Okuno 奥野精一 an Itabashi Elementary School 伏見板橋小学校
Yamazaki Ansai - Wikipedia
Shastra Vasana, Lust for Knowledge
Critical Readings on Japanese Confucianism (4 Vols. SET) - John A
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Yamazaki Ansai 山崎闇斎 and Okuno Tansai 奥野淡斎
Culture : 3 kinds of characters in Japanese.