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Family name 柳谷 (柳谷 , Yanagiya
, Yanagitani
) , around the world, is a rare cognomen. The family name 柳谷 is habitual in Canada, where it is a very rare surname, Brazil, and Philippines, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Brazil, China, and Canada. Also, 柳谷 is the forename as well as the last name.