Hadrian's Final years
Hadrian spent the final years of his life at Rome. In 134, he took an Imperial salutation or the end of the Second Jewish War (which was not actually concluded until the following year). In 136, he dedicated a new Temple of Venus and Roma on the former site of Nero's Golden House.
About this time, suffering from poor health, Hadrian turned to the problem of the succession. In 136 he adopted one of the ordinary consuls of that year, Lucius Ceionius Commodus, who took the name Lucius Aelius Caesar. He was both the stepson and son-in-law of Gaius Avidius Nigrinus, one of the "four consulars" executed in 118, but was himself in delicate health. Granted tribunician power and the governorship of Pannonia, Aelius Caesar held a further consulship in 137, but died on January 1, 138.
Following the death of Aelius Caesar, Hadrian next adopted Titus Aurelius Fulvus Boionius Arrius Antoninus (the future emperor Antoninus Pius), who had served as one of the four imperial legates of Italy (a post created by Hadrian) and as proconsul of Asia. On 25 February 138 Antoninus received tribunician power and imperium. Moreover, to ensure the future of the dynasty, Hadrian required Antoninus to adopt both Lucius Ceionius Commodus (son of the deceased Aelius Caesar) and Marcus Annius Verus (who was the grandson of an influential senator of the same name who had been Hadrian’s close friend; Annius was already betrothed to Aelius Caesar’s daughter Ceionia Fabia). Hadrian’s precise intentions in this arrangement are debatable. Though the consensus is that he wanted Annius Verus (who would later become the Emperor Marcus Aurelius) to succeed Antoninus, it has also been argued that he actually intended Ceionius Commodus, the son of his own adopted son, to succeed, but was constrained to show favour simultaneously to Annius Verus because of his strong connections to the Hispano-Narbonensian nexus of senatorial families of which Hadrian himself was a part. It may well not have been Hadrian, but rather Antoninus Pius — who was Annius Verus’s uncle – who advanced the latter to the principal position. The fact that Annius would divorce Ceionia Fabia and re-marry to Antoninus' daughter Annia Faustina points in the same direction. When he eventually became Emperor, Marcus Aurelius would co-opt Ceionius Commodus as his co-Emperor (under the name of Lucius Verus) on his own initiative.
The ancient sources present Hadrian's last few years as marked by conflict and unhappiness. The adoption of Aelius Caesar proved unpopular, not least with Hadrian's brother-in-law Lucius Julius Ursus Servianus and Servianus' grandson Gnaeus Pedanius Fuscus Salinator. Servianus, though now far too old, had stood in line of succession at the beginning of the reign; Fuscus is said to have had designs on the imperial power for himself, and in 137 he may have attempted a coup in which his grandfather was implicated.
Whatever the truth, Hadrian ordered that both be put to death. Servianus is reported to have prayed before his execution that Hadrian would "long for death but be unable to die". The prayer was fulfilled; as Hadrian suffered from his final, protracted illness, he had to be prevented from suicide on several occasions.