Oroku Ryōchū
, also known by the Chinese-style name , was a bureaucrat of the Ryukyu Kingdom.
Ryōchū was born to an aristocrat family called Ba-uji Oroku Dunchi .
He was the 12th head of Oroku Dunchi, and his father Oroku Ryōkyō, was a "Sanshikan" during Shō Iku's reign.
Oroku Ryōchū was selected as a member of "Sanshikan" in 1857.
He was pro-Japanese, and was a political ally of Makishi Chōchū and Onga Chōkō (also known as Shō Jorin).
The election of "Sanshikan" would be held in 1859, Oroku helped Makishi Chōchū to offer a bribe to two Japanese samurai, Ichiki Shirō and , in order to let Makishi be elected.
However, Zakimi Seifu, a former Sanshikan whom was impeached by Onga Chōkō and had to resign before, accused Makishi Chōchū of practice bribery at election.
Soon Oroku's unlawful act was exposed, he was removed from his position and arrested together with Makishi Chōchū and Onga Chōkō.
Prince Ie was appointed as judge to interrogate them.
Oroku denied all the allegations but Makishi pleaded guilty.
Oroku was exiled to Ie Island and imprisoned at a temple for 500 days, while Makishi was sentenced to exile to Yaeyama for ten years and Onga to Kume Island for six years, respectively.
This incident was known as .
Oroku Ryōkyō
, also known by his Chinese style name , was a bureaucrat of Ryukyu Kingdom.
Oroku Ryōkyō born to an aristocrat family called "Ba-uji Oroku Dunchi" , and was given the name .
He was the eldest son of Oroku Ryōwa.
He was appointed as by King Shō Kō in 1808 and danced "kumi odori" for the entertainment of the Chinese envoys.
He succeeded as the eleventh head of "Ba-uji Oroku Dunchi" after his father died in 1818.
Oroku was elected as a member of "Sanshikan" in 1839.
Oroku changed his name to in order to avoid confusion with his college, Yonabaru Ryōkō (also known as Ba Tokubō).
He retired in 1847.
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Question: Who is Oroku Ryōchū's paternal grandfather?