Approximate birth of Philip I in Syria.
Otacilia Severa marries Philip I.
Birth of Philip II to Otacilia Severa and Philip I.
Philip I becomes Praetorian prefect under Gordian III.
Philip I travels through Deultum.
February
Gordian III dies under unclear circumstances, either in battle against the Sasanians or assassinated by mutinous troops. His death occurs near the city of Zaitha (modern Iraq), and Philip the Arab succeeds him as emperor and Otacilia Severa becomes Empress.
August
Philip I arrives in Rome and is confirmed as Augustus.
Philip I renames his home town in Syria to Philippopolis and elevates it to civic status.
July
Philip I claims victory over the Carpi.
August
Philip I celebrates the Ludi Saeculares to commemorate the 1000th anniversary of Rome.
August
Philip I elevates his son, Philip II, to co-augustus.
November
Legions of Pannonia and Moesia revolt against Philip I.
April
Trajan Decius is proclaimed Emperor by the Danubian armies against Philip I and marches towards Rome.
September
Trajan Decius defeats and kills Philip the Arab at Verona. Trajan Decius becomes Emperor and Herennia Etruscilla Augusta.