Eurybarus

Eurybarus (Eurybaros (Greek: Εὐρύβαρος), Eurybatos (Greek: Εὐρύβατος) or Eurybates (Greek: Εὐρυβάτης)) was a Greek mythological hero, son of Euphemus and a descendant of the river god Axios.

Eurybarus was a young man but brave, and by divine inspiration happened to be coming from Kouretis and encountered the young and handsome Alcyoneus (Alkyoneus) as he was being led from Krisa to the cave of drakaina Sybaris on Mount Cirphis to be sacrificed to delivered the Delphians from her menace. Falling in love at first sight with him, and asking why they were doing so, Eurybarus realized that he could not help defending him and just allowing the youth to perish wretchedly. Tearing off the wreath from Alcyoneus head, he placed it on his own head and gave orders that he himself should be led forward instead of him.

As soon as he entered the cavern, Eurybarus ran and dragged Sybaris from her den, taking her out and tossing her off the crags. The drakaina struck her head against the footings of Krisa and she faded from sight. From that rock sprang a fountain and the locals call it Sybaris.

...
Wikipedia