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Meaning & History
From Japanese 桑 (kuwa) meaning "mulberry" combined with 谷 (tani) meaning "valley". A notable bearer of this surname is Natsuko Kuwatani (桑谷 夏子), a Japanese voice-actress who is best known for voicing Ryōko Asakura from the Haruhi Suzumiya series and Alph from Magical Girl Lyrical Nanoha.