Thrasyllus of Mendes

Thrasyllus of Mendes (/θrəˈsɪləs/; Ancient Greek: Θράσυλλος Thrasyllos), also known as Thrasyllus of Alexandria and by his Roman name Tiberius Claudius Thrasyllus (fl. second half of the 1st century BC and first half of the 1st century – died 36,), was a Greek Egyptian 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.