Ethnicity of the Roman Emperors:
-Augustus - Roman Italian
-Tiberius - Roman Italian
-Caligula - Roman Italian (born at Antium)
-Claudius - Roman Italian (born at Lugdunum in Gaul)
-Nero - Roman Italian (born at Antium)
-Galba - Roman Italian
-Otho - Etruscan
-Vitellius - unknown, presumably Italian
-Vespasian - Sabine Italian.
-Titus - Sabine Italian.
-Domitian - Sabine Italian.
-Nerva - Italian.
-Trajan - Spanish. with some distant Italian ancestry.
-Hadrian - Spanish, with some distant Italian ancestry.
-Antoninus Pius - Gaulish (born in Latium)
-Marcus Aurelius - Gaulish and Spanish
-Commodus - Gaulish and Spanish (born in Rome)
-Pertinax - unknown (family of slave origins)
-Julianus - Roman Italian
-Albinus - Italian
-Pescennius Niger - Roman Italian
-Septimius Severus - Carthaginian and Italian.
-Caracalla - Carthaginian, Italian, and Syrian
-Macrinus - Berber
-Elagabalus - Syrian
-Severus Alexander - Syrian
-Maximinus Thrax - probably Dacian (supposedly Thracian and Sarmatian)
-The Gordiani - unknown (probably mixed Italian, African, and Asian)
-Philip the Arab - Mesopotamian or Syrian Arab
-Decius - Illyrian or Pannonian (born at Budalia near Sirmium)
-Trebonianus Gallus - Perusian Etruscan
-Aemilian - Mauretanian
-Valerian - unknown
-Gallienus - unknown
-Claudius Gothicus - Illyrian
-Aurelian - Moesian
-Tacitus and Florian - unknown, possibly Italian or Danubian
-Probus - Illyrian or Pannonian (born at Sirmium)
-Carus - probably Gaulish and Greek (born at Narbo)
-Carinus and Numerian - probably Gaulish and Greek
-Diocletian - Dalmatian Illyrian
-Maximian - probably Illyrian or Pannonian
-Carausius - Menapian Gaul
-Constantius Chlorus - Moesian or Dacian
-Galerius - Dacian
-Severus II - Danubian
-Maxentius - Danubian and Syrian
-Constantine I and his sons - Moesian
