Hyacinth is from the Greek hyakinthos — both the botanical name for the fragrant spring bulb and the name of a beautiful Spartan youth in Greek myth. Hyakinthos, the male lover of Apollo, was accidentally killed by a discus thrown by the god (or by the jealous wind Zephyrus); from his blood Apollo grew the first hyacinth flower. Used as a feminine name in English from the 19th century, popularized as part of the Victorian botanical-name fashion (alongside Daisy, Iris, Lily, Violet). Hyacinth Bucket (pronounced "bouquet") is the heroine of the BBC sitcom Keeping Up Appearances (1990-1995). Saint Hyacinth (Jacek Odrowąż, 1185-1257) was a Polish Dominican friar.
Subject of Patricia Routledge's celebrated portrayal in the BBC series.
Hyacinth 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 Hyacinth reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.