Iole (Ἰόλη) is the Greek word for "violet." The princess of Oechalia and the late love of Heracles — her father King Eurytus refused to give her in marriage, leading to the chain of events that ended in Heracles's death.
Featured in Sophocles' Trachiniae and Ovid's Metamorphoses.
Iole 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 Iole reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.