Father Tiber

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.

According to Book VIII of Virgil's epic Aeneid, Tiberinus helped Aeneas after his arrival in Italy from Troy, suggesting to him that he seek an alliance with Evander of Pallene in the war against Turnus and his allies (see founding of Rome). With Manto, Tiberinus was the father of Ocnus.

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

Aeneas and Tiberinus by Bartolomeo Pinelli

Altar, showing Tiberinus (bottom right) revealing the twins

...
Wikipedia