Lucius Julius Caesar (17 BCE – 20 August, 2 CE), most commonly known as Lucius Caesar, was the second son of Marcus Vipsanius Agrippa and Julia the Elder. He was born between 14 of June and 15 July 17 BCE with the name Lucius Vipsanius Agrippa, but when he was adopted by his maternal grandfather Roman Emperor Caesar Augustus, his name was changed to Lucius Julius Caesar. In the year of his birth, his maternal grandfather Caesar Augustus adopted him and his brother Gaius Caesar. He may have used the cognomen Vipsanianus according to adoption in ancient Rome or Agrippa as his youngest brother Agrippa Postumus after the tria nomina Lucius Julius Caesar. He and his brother were raised and educated by their grandparents.