Gefjun is from the Old Norse Gefjon (giver) — Norse goddess of plowing, fertility, prophecy, and virginity. Gefjun is one of the Asynjur (female Æsir) goddesses of Norse mythology, attested throughout the Poetic Edda, the Prose Edda by Snorri Sturluson (13th century), and the Ynglinga Saga. The iconic Gefion Fountain (Gefionspringvandet) in Copenhagen (1908) — sculpted by Anders Bundgaard, depicting Gefjun driving her four oxen — is one of the Danish monuments + the most-photographed fountain in Copenhagen.
and Danish national identity.
Gefjun 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 Gefjun reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.