 Several modern scholars cite his age at Caesar's Triumph in 46 BC as four or six giving rise to the typically cited birth year range of 52-50 BC, which his biographer, Duane Roller, believes is incorrect.Roller instead places his birth in early 48 BC because the Greek term "brefos" was used for him which means literally fetus but can figuratively mean youth.The word for a child of age 4 to 6 is "pais" which was not used for him in the ancient sources.