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Tsunamasa Ōyama (大山 綱昌, Ōyama Tsunamasa, December 24, 1853 - October 18, 1934) was a Japanese politician. He was governor of Saga Prefecture (1898-1901), Gunma Prefecture (1901-1902) and Nagano Prefecture (1902-1905).

• 1907 - Order of the Rising Sun^[1]

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