Yui Shōsetsu

Yui Shōsetsu (由井 正雪 or 由比 正雪; 1605 – September 10, 1651) was a Japanese military scholar and rōnin in the Edo period. He was one of the ringleaders of the 1651 Keian Uprising, an attempt to overthrow the Tokugawa Shogunate, but informal communication uncovered the plot and he was cornered and committed suicide. Yui was known as one of the "Three Great Rōnin" along with Kumazawa Banzan and Yamaga Sokō.