Short answers, pulled from the story.
Romulus Augustus was the last Western Roman emperor who reigned from 475 to 476. He was placed on the imperial throne while still a minor by his father Orestes, making him little more than a figurehead for actual power.
Odoacer defeated Orestes in battle at Ticinum on the 28th of August 476 and captured him. On the 4th of September, Odoacer captured Ravenna and deposed Romulus before assuming control of Italy as its first king.
Romulus was granted an estate in Campania called Castellum Lucullanum where he lived with a large retinue and some surviving relatives. This fortress originally served as the retirement villa of Tiberius and later functioned as a small administrative and military centre in Campania.
Romulus is typically regarded as the last Western Roman emperor because his deposition marks the transition from antiquity to the medieval period. His reign ended when Odoacer sent the western imperial regalia to emperor Zeno and ruled without further imperial successors in the west.
Romulus received an annual pension of 6,000 solidi and likely died before the mid-530s eastern Roman invasion of Italy. He may have played a role in founding a monastery around the remains of Saint Severinus of Noricum in the 480s or early 490s.