Okay, this is something new to me.

Fragipani, as most people will know, is a tropical flower, but it was also a person! The Marquis Muzio Frangipani was a well known 16th century Italian, a lover of perfumes and fragrances. He, or his perfumers, found out that you could suspend perfume absolu (essence) in alcohol, something that revolutionized the perfume industry.

Presumably, the flower is named after him (well, hey, the macadamia nut is after one John MacAdam, a scientist who went on an expedition in Australia and apparently discovered the nut, so why not name a flower after a perfumer?)