Time Line 303
Births
- Martyrs of the Salarian Way
- Martyrs of Nicomedia
- Martyrs of Egypt
- Saint Agathopus
- Saint Acacius
- Saint Adaucus
- Saint Agapius of Caesarea
- Saint Alexander of Caesarea
- Saint Devota
- Saint Dionysius of Caesarea
- Saint Exuperantius
- Saint Emidius
- Saint Ephysius of Sardinia
- Saint Glycerius of Nicomedia
- Saint Gorgonius
- Saint Migdonius
- Saint Mardonius
- Saint Marcellus
- Saint Pancharius of Nicomedia
- Saint Philoterus
- Saint Pausis of Caesarea
- Saint Romulus of Caesarea
- Saint Sabinus
- Saint Timolaus of Caesarea
- Saint Theodulus
- Saint Venustian
- Saint Aaron of Caerleon
- Saint Aceolus of Amiens
- Saint Acius of Amiens
- Saint Anastasius of Lerida
- Saint Anthimus of Rome
- Saint Aquilinus of Nyon
- Saint Crescentinus
- Saint Firminus of Amiens
- Saint Heradius of Nyon
- Saint John of Nicomedia
- Saint Justus of Trieste
- Saint Olympiades
- Saint Paul of Nyon
- Saint Peter of Nicomedia
- Saint Saturninus of Cagliari
- Saint Serenus the Gardener
- Saint Victor Maurus
- Saint Vincent of Bevagna
- Saint Zeno of Nicomedia
- Saint Felix of Thibiuca
- Saint Procopius
Founded
Elevated
Suppressed
Other Events
- Diocletian begins a persecution of Christians
- Roman edict for the persecution of Christians issued by Emperor Valerius Maximianus Galerius
| 302 | 304 |
