Hadrian's last few years were marked by conflict and unhappiness. His adoption of Aelius Caesar proved unpopular, not least with Hadrian's brother-in-law Lucius Julius Ursus Servianus and Servianus's grandson Gnaeus Pedanius Fuscus Salinator. Servianus, though now far too old, had stood in the line of succession at the beginning of Hadrian's reign; Fuscus is said to have had designs on the imperial power for himself. In 137 he may have attempted a coup in which his grandfather was implicated; 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". During his final, protracted illness, Hadrian was prevented from suicide on several occasions.