Libby is from the English Libby. English Libby + diminutive of Elizabeth + Hebrew Elisheva My God is an oath + Latin lib/libertas freedom + Statue of Liberty Liberty Enlightening the World gift from France 1886 + Frédéric Auguste Bartholdi sculptor + Gustave Eiffel internal structure + Ellis Island immigration ~12 million immigrants 1892-1954 + The New Colossus Emma Lazarus 1883 + Give me your tired your poor your huddled masses + Libby Larsen American composer Grammy 1994.
Libby 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 Libby reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.