The brother of King Numitor of Alba Longa. He dethroned his brother and killed his sons. To prevent that Numitor's only daughter, Rhea Silvia, would provide offspring that may be a threat to the throne, he forced the girl to became a Vestal virgin. When the girl became pregnant and gave birth to the twins Romulus and Remus, Amulius had the twins thrown into the Tiber and locked their mother in a dungeon. The twins later killed Amulius and restored their grandfather to the throne.
Livius I, 3-5.