Plutarch, Parallela minora
Goodwin, Ed.

Theseus, the true son of Neptune, had Hippolytus by the Amazon Hippolyta, and afterward married Phaedra the daughter of Minos, who fell deep in love with Hippolytus, and made use of the nurse's mediation to help forward the incest. But Hippolytus upon this left Athens and went away to Troezen, where he diverted himself with [p. 472] hunting. Now this lascivious woman, finding her design disappointed, forged several scandalous letters to the prejudice of the chaste young man, and ended her days with a halter. Theseus gave credit to the slander, and Neptune having promised him a grant of any three things he would ask, he made it his request that he would destroy Hippolytus. So Neptune sent a bull to the coast where Hippolytus was driving his chariot, which put his horses into such a fright, that they ran away with them, and overturning the chariot killed the master.

Comminius Super, a Laurentine, had a son by the nymph Egeria, whom he called Comminius; after which he married one Gidica, who fell passionately in love with her son-in-law. And receiving a repulse, she framed slanderous letters against him, which she left behind her, and so hanged herself. Comminius, reflecting upon the crime and believing the calumny, applied himself to Neptune, who with a terrible bull frighted the horses so, while the youth was in the chariot, that they overturned all, and killed him with the fall.—Dositheus, Book Third of Italian Histories.