how did romulus become king
1 When they grow up, Romulus and Remus restore the throne of Alba Longa to its rightful ruler, their maternal grandfather. 2  Then they set out to found their own city. 3  Sibling rivalry leads Romulus to slay his brother. 4  Romulus then becomes the first king and founder of the city of Rome.5  Rome is named after him. After the birth of Mars' sons Romulus and Remus, the king orders them to be left to die in the Tiber River. 2  When the basket in which the twins were placed washes up on shore, a wolf suckles them and a woodpecker named Picus feeds them until....