Soldiers under their uncle role got sent to drop Mars twins into the river so they will drown and die. This all happened during the night when the twins parents were sleeping.
Then that night the babies got stuck in weeds in the river and the wolves rescued the twins. Then the wolves raised the twins as wolves for most of their life.
Then after they found their grandfather they started to explore the land to build a great city. After that Romulus killed Remus and thats why Rome was named. Romulus also took the throne from his great grandfather.