Erigone (Ἠριγόνη) is the Athenian girl who, finding her father Icarius murdered, hanged herself from a tree in grief. She was placed in the sky as the constellation Virgo, and her dog Maera as Sirius — the Dog Star.
Featured in Ovid's Metamorphoses and Hyginus's astronomical mythology.
Erigone 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 Erigone reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.