Ligeia was one of the Sirens, her name meaning clear-voiced or shrill-sweet — the beauty of an irresistible song.
Musical and a little mysterious, it hums with melody.
Ligeia 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 Ligeia reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.