Cerys is a Welsh name derived from caru, meaning "to love." It is sometimes interpreted as "love" or "loved one." The name is purely Welsh — not used anywhere else in the world until the 20th century.
Cerys is among the most popular girl's names in Wales. Outside Wales it remains rare but distinctive.
Cerys 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.
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In Pythagorean numerology the letters of Cerys reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.