Shōsatto (承察度), read variously as Ōzato, Ofosato, and Ufusatu, was a local ruler of Okinawa Island who was given the title of King of Sannan.
Modern attempts to decipher the enigmatic un-Okinawan name Shōsatto point to Ōzato (大里), a toponym with multiple referents.
He re-interpretes the phrase "Prince of Sannan" (山南王子) as a title given by the King of Chūzan to his senior retainer, possibly his blood relative.
[3] The Chūzan Seikan (1650), Ryūkyū's first official history book, identified the King of Sannan as the Aji of Ōzato.
Sai On naïvely inferred that Shōsatto died in 1403, the year Ōōso reported his death to the Chinese emperor.