Tiberinus

Tiberinus is a figure in Roman mythology. He was added to the 3,000 rivers (sons of Oceanus and Tethys), as the genius of the river Tiber.

He helped Aeneas in his travel from Troy, suggesting to him that he land in Latium and gave him much other precious advice.

Tiberinus is also known as the river god who found the twins Romulus and Remus and gave them to the she-wolf Lupa. He later rescued and married Rhea Silvia, the mother of the twins and a Vestal Virgin who had been sentenced to death.

The Mark of Athena
Tiberinus and his wife help Annabeth to start off her quest for the Mark of Athena in Rome, Italy.