138
ID: 3843
St. Hyginus becomes ninth pope - establishes clerical ranks and orders, combats Gnosticism
ID: 3843
138
ID: 4020
Hadrian adopts Antoninus Pius - on condition Antoninus adopts Marcus Aurelius and Lucius Verus
ID: 4020
138
ID: 4021
Death of Hadrian - dies hated by Senate, Antoninus barely achieves his deification
ID: 4021
138
ID: 4022
Antoninus Pius becomes emperor - longest peaceful reign, empire at height of prosperity
ID: 4022