Hedyle (Ἡδύλη) is from the Greek hēdys (sweet). Hedyle (3rd c. BCE) was the Greek epic poet of Athens — author of the lost epyllion Scylla on the sea-monster's transformation.
Three generations of Greek poets, mother to son.
Hedyle 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 Hedyle reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.