Career
The Ogasawara school (ryu) was founded in the Kamakura period by Tsuneharu"s ancestor Ogasawara Nagakiyo, and specialised in ceremonial archery. However, its teachings were largely lost by the sixteenth century, due to numerous schisms in the Ogasawara family. In 1724, the shogun Tokugawa Yoshimune ordered Tsuneharu to revive the lost school.