A legend is a story about a person who did something heroic. It is not based on fact nor can it be said to be the truth. Roman children were told the following legend about how the city of Rome was built.
Romulus and Remus were twin brothers. Their father was Mars, the God of war, their mother was Rhea Silvia, a vestal virgin and daughter of the King, Numitor.
Numitor's brother, Amulis, had taken the throne from him and had forced Rhea Silvia to becom a vestel virgin so that she won't have any children who might try and take the throne.
When Romulus and Remus were born, Amulis seized them, put them into a basket and threw then into River Tiber, hoping they would drown.