Chiyo (千代) combines the Japanese chi (thousand) and yo (generation) — meaning "thousand generations." Evokes longevity and lineage, often used as a blessing of long life.
Chiyo was the birth name of Sayuri in Memoirs of a Geisha. Fukuda Chiyo-ni (1703-1775) was the great Japanese haiku poet.
Chiyo does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Chiyo reduce to 6, The Nurturer. This is a traditional interpretive system, not a factual claim about the name.