[PAR] [TLE] Tacitus [SEP] Publius (or Gaius) Cornelius Tacitus ( ; ] ;  56 AD –  120 AD ) was a senator and a historian of the Roman Empire.  The surviving portions of his two major works—the "Annals" and the "Histories"—examine the reigns of the Roman emperors Tiberius, Claudius, Nero, and those who reigned in the Year of the Four Emperors (69 AD).  These two works span the history of the Roman Empire from the death of Augustus, in 14 AD, to the years of the First Jewish–Roman War, in 70 AD.  There are substantial lacunae in the surviving texts, including a gap in the "Annals" that is four books long. [PAR] [TLE] Thrasyllus of Mendes [SEP] Thrasyllus of Mendes ( ; Greek: Θράσυλλος Μενδήσιος ), also known as Thrasyllus of Alexandria and by his Roman citizenship name Tiberius Claudius Thrasyllus ( Τιβέριος Κλαύδιος Θράσυλλος ; fl.  second half of the 1st century BC and first half of the 1st century – died 36,), was an Egyptian Greek grammarian and literary commentator.  Thrasyllus was an astrologer and a personal friend of the Roman emperor Tiberius, as mentioned in the "Annals" by Tacitus and "The Twelve Caesars" by Suetonius.
[PAR] [TLE] Tacitus [ SEP ] Publius ( or Gaius ) Cornelius Tacitus ( ; ] ; 56 AD – 120 AD ) was a senator and a historian of the Roman Empire . The surviving portions of his two major works — the " Annals " and the " Histories"—examine the reigns of the Roman emperors Tiberius , Claudius , Nero , and those who reigned in the Year of the Four Emperors ( 69 AD ) . These two works span the history of the Roman Empire from the death of Augustus , in 14 AD , to the years of the First Jewish – Roman War , in 70 AD . There are substantial lacunae in the surviving texts , including a gap in the " Annals " that is four books long . [PAR] [TLE] Thrasyllus of Mendes [ SEP ] Thrasyllus of Mendes ( ; Greek : Θράσυλλος Μενδήσιος ) , also known as Thrasyllus of Alexandria and by his Roman citizenship name Tiberius Claudius Thrasyllus ( Τιβέριος Κλαύδιος Θράσυλλος ; fl . second half of the 1st century BC and first half of the 1st century – died 36 , ) , was an Egyptian Greek grammarian and literary commentator . Thrasyllus was an astrologer and a personal friend of the Roman emperor Tiberius , as mentioned in the " Annals " by Tacitus and " The Twelve Caesars " by Suetonius .
Which Roman emperor was personally known by or written about by both Thrasyllus of Mendes and Tacitus?
Which Roman emperor was personally known by or written about by both Thrasyllus of Mendes and Tacitus ?
Tiberius
Tiberius