Romulus and Remus were the twins born to the human mother and Mars. They were dumped in the Tiber by their human mother since she didn't want them
They had been carried down the river by their mother. They were soon followed by a wolf.
They were nurtured by the wolf in his cave
The twins were adopted by a shepherd
During the rivalry between the two brothers, Romulus assassinated Remus as they prepared to visit the city. A shepherd took in the twins and adopted them.
Romulus was the architect of the city that bears his name.