Osazaki, life name of Emperor Nintoku
Oshihi, ancestor of Otomo chiefs
Oshikatsu, Rebellion of
Oshioki Ojomoku, code
Oshio Heihachiro (1792-1837) leads revolt after famine of 1836-7
Oshiwa, son of Richu, killed by Yuryaku
Oshiyama, governor of Mimana, recommends cession of part of Mimana to
Kudara; territorial dispute of
Oshu, or Mutsu subjugated (1189); revolt of Ando
Ota Sukekiyo (1411-93), builds fort at Iwatsuki
Dokwan or Sukenaga (1432-86), builds fort at Yedo; aids Ogigayatsu branch of Uesugi