Background
Otsuki Bankei was born in 1801. He was the youngest son of Bansui.
Otsuki Bankei was born in 1801. He was the youngest son of Bansui.
He studied under his father and later at the Shoheiko, the Shogunate College.
He was appointed a Confucian instructor of his clan (1832). Around 1848, he lectured on Western gunnery. Also advised his lord to support an open-door policy toward foreign nations. He was appointed head of the Yokendo School in Sendai (1862). At the Meiji Restoration (1868), he was imprisoned but was soon pardoned.