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Cognomen 昌丈 (昌丈 ) , around the globe, is an extremely rare surname. Much more prevalently, 昌丈 is the forename as well as the last name.
Masatake, 政武, 昌武, 正健, 正剛, 正威, 正強, 正桓, 正武, 正毅, 武, and 雅武