Seigan Osho (high priest Seigan), a high-ranking disciple of Takuan SOHO who was expelled from Daitoku-ji Temple due to the Shie Incident--which occurred during the reign of the third Shogun Iemitsu TOKUGAWA--was handed over to the Todo family, and Ryuo-ji Temple was founded by Seigan Osho (See page 590 of "Sokokushi" the last volume).
三代将軍徳川家光時代の紫衣事件によって大徳寺から追放になった沢庵宗彭の高弟、藤堂家が清巌和尚をお預かりし、同寺は清巌和尚の開山となっている（『宋国史』下巻590頁）。