Chiyo

Chiyo is also used as a masculine name in Japanese. However, it's more common for females. So, I think that the "Gender" of this name should be changed from "Feminine" to "Feminine & Masculine". Some evidence for this is that Chiyo is also used as a name element in unisex and masculine Japanese names, such as Aichiyo, Chiyomaru, Chiyonosuke, etc.

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Sources: https://en.m.wikipedia.org/wiki/Chiyo (I think)
https://forebears.io/forenames/chiyo (I think)

Chiyo is one of the most traditionally popular Japanese names. It was already common during the Edo period. However in recent decades it has become old fashioned and isn't used much anymore. It was last really fashionable in the 1910s.

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Chiyo was the #1 most popular girls name in Japan in 1912 and 1915. It last made the top 10 in 1918.

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The most common spelling is 千代 (thousand + generation).

Chiyo was last given to 6 girls in America in 2009, possibly because of Japanese descent.