Question: Who is the paternal grandfather of Yuntanza Chōken?
Sentence (from "Yuntanza Chōken"): Prince Yuntanza was dispatched together with Wakugawa Chōkyō (also known by Shō Hōten) in 1764 to celebrate Tokugawa Ieharu succeeded as "shōgun" of the Tokugawa shogunate.
Relevant evidence: No