Jacinto

Spanish and Portuguese: from the personal name Jacinto, (Latin Hyacinthus, Greek Hyakinthos). This was the name of a 3rd-century saint who was martyred together with his brother Protus. He enjoyed a certain cult in Portugal. His name, which is almost certainly of pre-Greek origin, in classical times denoted a flower (not the modern hyacinth, but perhaps the martagon lily), and it was borne by a mythological character from whose blood the flower was supposed to have sprung up.